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Giles Smith, Andrew Robson, Liz Robinson, Lucy Alexander, Jon Ashworth, Andrew Billen, DJM, Carol Hamilton, Stephen Farrell and Ian MacKinnon, Tim Albone and Daniel McGrory, Adam Sherwin Media Reporter, David Aaronovitch, Mary Duby, Adam Sage and Charles Bremner, Mark Souster, Linda Tsang, Mark Stephens, Philip Howard, Hilary Finch, Sam Coates and David Rose, David Chater, Michael Binyon, James Bone, Dr J. Kerr, Alexandra Frean Social Affairs Correspondent, Lord Astor of Hever Andrew Robathan, Elizabeth Judge, Richard Irving, Carl Mortished, Patrick Kidd, Will Pavia, Edward Harding, Jenny Knight, Sam Lister, Joe Joseph, Andrew Norfolk, Jane MacArtney, John Goodbody and Ashlling O'Connor, Stewart Tendler Crime Correspondent, Tom Bawden, Ben Yudkin, Gary Jacob, Mrs Yaffa Glass, Sir John Hoskyns, Tim Reid, Angela Jameson Industrial Correspondent, Dan Sabbagh, Jane Clarke, Jonathan Gornall, Libby Purves, James Delingpole, N. H. Graveston Chairman, Roland Watson, John Westcombe, David Hands, Dominic Carman, Liz Chong, Richard Susskind, Hugo Rifkind, Angela Jameson, Neil McLeish Managing Director, Russell Kempson, Edward Fennell, Richard Giles, Mrs D. B. Ridgway, Norman Giller, Jill Sherman and Greg Hurst, Rick Broadbent, Maria Friedman, Andrew Miller, Matthew Spiro, Simon de Bruxelles, Rob Wright, David Watts, Ann Treneman Parliamentary Sketch, Harold Cottom, Gary Duncan and Carl Mortished, Martin Samuel, Neil Harman Tennis Correspondent, Raymond Keene, Juliet Rix, Ian Evans, John Russell Taylor, Matt Dickinson, Ivan K. Rowland, Sandy Bruce-Lockhart, Christine Buckley Industrial Editor, Dr Tanya Byron, Rosemary Bennett Deputy Political Editor, Peta Bee, Jeremy Page, Chris Campling, Bronwen Maddox, Patrick Hosking, Tristan McConnell, Christopher Martin-Jenkins Chief Cricket Correspondent, Damian Whitworth, Roger Boyes, D. Smith, David Mattin, Gabriel Rozenberg Economics Reporter, Nick Hasell, David Hands Rugby Correspondent, Nicholas Stadlen, Qc, Julian Muscat, Paul Simons, Anna Frame, John Goodbody, Giles Whittell, Philip Webster Political Editor, Chris Ayres and Jack Malvern, Justin Hawkins, Ashling O'connor, Alan Lee, Evan Price, Peter Riddell, Ben MacIntyre, Tony Dawe, Ben Webster, Carly Chynoweth, Jack Malvern Arts Reporter, Graham Searjeant, Jacqui Goddard, David Sinclair, Anthony Pilkington Managing Director, Catherine Philp, Martin Waller, Chris Ayres, Christopher Irvine, Rana Sabbagh-Gargour, John Plummer, Benedict Nightingale, Stephen Cragg, Stephen Dalton, Nicola Woolcock, Leo Lewis, Richard Morrison, Frances Gibb, Sheila Compton, R. W. Cooper, Andrés Toranzos, Dr Tim Heywood, Huw Beynon, Olav Bjortomt, Jenny Davey, Edward Gorman Sailing Correspondent, Ross Anderson, Patience Wheatcroft, Joe Bolger, Lisa Verrico,

... his part in the campaign to liberate France Emiliano Zuleta Accordionist and prolific composer who brought the ... a challenge. As long as it involves motorbikes Papa's got a brand new (man) bag And ...

2005 - Gale Group | TDA

Artigo Acesso aberto

Emiliano Papa, A. H. MacDonald,

In this paper we introduce and study the correlation functions of a chiral one-dimensional electron model intended to qualitatively represent narrow Hall bars separated into left and right sections by a penetrable barrier. The model has two parameters representing respectively interactions between top and bottom edges of the Hall bar and interactions between the edges on opposite sides of the barrier. We show that the scaling dimensions of tunneling processes depend on the relative strengths of ...

Tópico(s): Magnetic properties of thin films

2005 - American Physical Society | Physical Review B

Artigo Acesso aberto Revisado por pares

Emiliano Papa, A. H. MacDonald,

Tunneling of fractionally charged quasiparticles across a two-dimensional electron system on a fractional quantum Hall plateau is expected to be strongly enhanced at low temperatures. This theoretical prediction is at odds with recent experimental studies of samples with weakly pinched quantum-point-contact constrictions in which the opposite behavior is observed. We argue here that this unexpected finding is a consequence of electron-electron interactions near the point contact.

Tópico(s): Magnetic properties of thin films

2004 - American Physical Society | Physical Review Letters

Artigo Acesso aberto

Emiliano Papa, A. M. Tsvelik,

In this paper we study the critical exponents of the quantum sine-Gordon model and U(1) Thirring models in the incommensurate phase. This phase appears when the chemical potential h exceeds a critical value and is characterized by a finite density of solitons. The low-energy sector of this phase is critical and is described by the Gaussian model (Tomonaga-Luttinger liquid) with the compactification radius dependent on the soliton density and the sine-Gordon model coupling constant $\ensuremath{\beta}.$ ...

Tópico(s): Algebraic structures and combinatorial models

2001 - American Physical Society | Physical review. B, Condensed matter

Artigo Acesso aberto

Wei-Cheng Lee, Nikolai A. Sinitsyn, Emiliano Papa, A. H. MacDonald,

A quantum Hall line junction system consists of a one-dimensional Luttinger liquid (LL) and two chiral channels that allow density waves incident upon and reflected by the LL to be measured separately. We demonstrate that interactions in a quantum Hall line junction system can be probed by studying edge magnetoplasmon absorption spectra and their polarization dependences. Strong interactions in the junction lead to collective modes that are isolated in either Luttinger liquid or contact subsystems.

Tópico(s): Semiconductor Quantum Structures and Devices

2005 - American Physical Society | Physical Review B

Artigo Acesso aberto Revisado por pares

Attilio Naccarato, Antonella Tassone, Maria Martino, Sacha Moretti, Antonella Macagnano, Emiliano Zampetti, Paolo Papa, Joshua Avossa, Nicola Pirrone, Michelle Nerentorp, John Munthe, Ingvar Wängberg, Geoff W. Stupple, Carl P. J. Mitchell, Adam R. Martin, A. Steffen, Diana Babi, Eric M. Prestbo, Francesca Sprovieri, Frank Wania,

Abstract. Passive air samplers (PASs), which provide time-averaged concentrations of gaseous mercury over the timescale of weeks to months, are promising for filling a gap in the monitoring of atmospheric mercury worldwide. Their usefulness will depend on their ease of use and robustness under field conditions, their availability and affordability, and most notably, their ability to provide results of acceptable precision and accuracy. Here we describe a comparative evaluation of three PASs with ...

Tópico(s): Toxic Organic Pollutants Impact

2021 - Copernicus Publications | Atmospheric measurement techniques

Artigo Acesso aberto

Emiliano Papa, John Schliemann, A. H. MacDonald, Matthew P. A. Fisher,

Mean-field theory predicts that bilayer quantum Hall systems at odd integer total filling factors can have stripe ground states, in which the top Landau level is occupied alternately by electrons in one of the two layers. We report on an analysis of the properties of these states based on a coupled-Luttinger-liquid description that is able to account for quantum fluctuations of charge-density and position along each stripe edge. The soft modes associated with the broken symmetries of the stripe ...

Tópico(s): Semiconductor Quantum Structures and Devices

2003 - American Physical Society | Physical review. B, Condensed matter

Artigo Acesso aberto

Emiliano Papa, A. M. Tsvelik,

Using the recently obtained exact results for the expectation values of operators in the sine- and sinh-Gordon models [A. B. Zamolodchikov and S. Lukyanov, Nucl. Phys. B{\bf 493}, 571 (1997), V. Fateev, S. Lukyanov, A. B. Zamolodchikov and Al. B. Zamolodchikov, Phys. Lett. B{\bf 406}, 83 (1997)] we calculate the specific heat of the corresponding two dimensional Euclidean (classical) models. We show that the temperature dependence of the specific heat of the sine-Gordon model, in the commensurate phase, ...

Tópico(s): Quantum many-body systems

1999 - American Physical Society | Physical review. B, Condensed matter

Artigo Acesso aberto Revisado por pares

Fernando J. Fernández, Luis Manuel del Papa, Emiliano Mange, Pablo Teta, Eduardo Crivelli Montero, Ulyses F. J. Pardiñas,

The faunal content from Epullán Chica archaeological site (ECh, thereafter), a small cave located in northwestern Patagonia, Argentina, was studied from taphonomic and paleoenvironmental points of view. This cave is placed in the ecotone between Monte desert and the Patagonian steppe, in the middle Limay River basin, was occupied since the end of the Late Holocene. Zooarchaeological evidence retrieved from ECh is diverse, including fresh-water mollusk shells (Diplodon chilensis), eggshell and bone ...

Tópico(s): Forensic Anthropology and Bioarchaeology Studies

2015 - Elsevier BV | Quaternary International

Artigo Acesso aberto

Emiliano Papa, Tilo Stroh,

The nature of a metal-insulator transition tuned by external gates in quantum Hall (QH) systems with point constrictions at integer bulk filling, as reported in recent experiments [S. Rodaro et al., Phys. Rev. Lett. 97, 046801 (2005)], is addressed. We are particularly concerned here with the insulating behavior---the phenomena of backscattering enhancement induced at high gate voltages. Electrostatics calculations for QH systems with split gates performed here show that observations are not a consequence ...

Tópico(s): Magnetic properties of thin films

2007 - American Physical Society | Physical Review B

Artigo Acesso aberto Revisado por pares

Emiliano Papa, Tilo Stroh,

The nature of a metal-insulator transition tuned by external gates in quantum Hall (QH) systems with point constrictions, as reported in recent experiments of Roddaro et al [1], is examined. We attribute this phenomenon to a splitting of the integer edge into conducting and insulating stripes, the latter wide enough to allow for the stability of the edge structure. Inter-channel impurity scattering and inter-channel Coulomb interactions do not destabilize this picture.

Tópico(s): Advancements in Semiconductor Devices and Circuit Design

2006 - American Physical Society | Physical Review Letters

Artigo Revisado por pares

Emiliano Zampetti, Antonella Macagnano, Paolo Papa, Andrea Bearzotti, Francesco Petracchini, Lucia Paciucci, Nicola Pirrone,

Most QCM-based devices devoted to PM measurement use substrates of various kinds to collect and retain particles. The novelty of this work is the possibility to use an integrated microheater actuator to change the substrate collecting features during the particulate adsorption. In fact, this paper presents preliminary results about the exploitation of a HQCM (Heated Quartz Crystal Microbalance) in particulate matter (PM) measurements. HQCM is a 10 MHz quartz crystal microbalance with a microheater ...

Tópico(s): Advanced Chemical Sensor Technologies

2017 - Elsevier BV | Sensors and Actuators A Physical

Artigo Revisado por pares

Andrea Bearzotti, Antonella Macagnano, Paolo Papa, Iole Venditti, Emiliano Zampetti,

In this work we report the results concerning the integration of a thin layer of an organic polymer (pentacene) on a quartz crystal microbalance (QCM) used for pollutant detection at room temperature. Volatile organic compounds (VOC) are one of the major air pollutants. They are directly involved in the photochemistry of the ozone layer and can affect human health. Exposure to VOC may happen in indoor or outdoor environments, both for short or longer period of time in domestic or working conditions. ...

Tópico(s): Acoustic Wave Resonator Technologies

2016 - Elsevier BV | Sensors and Actuators B Chemical

Artigo Acesso aberto Revisado por pares

Andrea Bearzotti, Paolo Papa, Antonella Macagnano, Emiliano Zampetti, Iole Venditti, Raoul Fioravanti, Lucia Fontana, Roberto Matassa, Giuseppe Familiari, Ilaria Fratoddi,

Adsorption and detection of environmental total gaseous mercury (TGM) was studied by using gold nanoparticles (AuNPs) on purpose functionalized with dithiol ligands, i.e. Biphenyl-4,4′-dithiol (BI) or p-Terphenyl-4,4′′-dithiol (TR), suitable for nanoparticles based network formation. AuNPs-BI and AuNPs-TR with size 6–8 nm were deposited onto quartz fibres and used as adsorbent materials for the detection of TGM, both indoor for adsorption studies, at defined concentrations (∼4.5 ng m−3 Hg), and outdoor, ...

Tópico(s): Air Quality and Health Impacts

2018 - Elsevier BV | Journal of environmental chemical engineering

Artigo Acesso aberto Revisado por pares

Emiliano Zampetti, Paolo Papa, Joshua Avossa, Andrea Bearzotti, Catia Balducci, Giovanna Tranfo, Antonella Macagnano,

Benzene, toluene and xylene (BTX) are an important part of the volatile organic compounds (VOCs) to be detected and monitored in the air, due to their toxicity towards human health. One of the most reliable technique used in BTX detection is gas chromatography (GC), which presents a high sensitivity. On the other hand, it has important drawbacks, such as high costs, the need for qualified personnel and frequent maintenance. To overcome these drawbacks, this work reports the development of a low cost ...

Tópico(s): Analytical Chemistry and Sensors

2020 - Multidisciplinary Digital Publishing Institute | Sensors

Artigo Acesso aberto

Emiliano Papa, A. M. Tsvelik,

In this paper we apply the exact solution of the sine-Gordon model to describe thermodynamic properties of the soliton liquid in the incommensurate phase of the double-layer quantum Hall systems. In this way we include thermal fluctuations and extend to finite temperatures the results obtained by C.B. Hanna, A.H. MacDonald and S.M. Girvin [Phys. Rev. B {\bf 63}, 125305 (2001)]. In addition we calculate the specific heat of the system. While the results obtained for the sine-Gordon model are available ...

Tópico(s): Surface and Thin Film Phenomena

2002 - American Physical Society | Physical review. B, Condensed matter

Artigo Acesso aberto Revisado por pares

Alessandro Mei, Emiliano Zampetti, Paola Di Mascio, Giuliano Fontinovo, Paolo Papa, Antonio D’Andrea,

Maintenance has a major impact on the financial plan of road managers. To ameliorate road conditions and reduce safety constraints, distress evaluation methods should be efficient and should avoid being time consuming. That is why road cadastral catalogs should be updated periodically, and interventions should be provided for specific management plans. This paper focuses on the setting of an Unmanned Ground Vehicle (UGV) for road pavement distress monitoring, and the Rover for bituminOus pAvement ...

Tópico(s): 3D Surveying and Cultural Heritage

2022 - Multidisciplinary Digital Publishing Institute | Sensors

Capítulo de livro Revisado por pares

Emiliano Zampetti, Paolo Papa, Francesco Di Flaviano, Lucia Paciucci, Francesco Petracchini, Nicola Pirrone, Andrea Bearzotti, Antonella Macagnano,

In this paper we show the developing and the applications of a remotely controlled terrestrial vehicle (or Unmanned Ground Vehicles—UGV) provided with an integrated sensory system for environmental monitoring. The developed system is aimed to monitor some of the key air pollutants and harmful compounds, usable in contaminated sites at high risk to human health. The system is a 4WD radio-controlled vehicle, with small dimensions and low weight, complemented by a sensory system based on hybrid sensors ...

Tópico(s): Advanced Chemical Sensor Technologies

2017 - Springer Science+Business Media | Lecture notes in electrical engineering

Artigo Acesso aberto Revisado por pares

Gaetano Scaramuzzo, Lorenzo Gamberini, Tommaso Tonetti, Gianluca Zani, Irene Ottaviani, Carlo Alberto Mazzoli, Chiara Capozzi, Emanuela Giampalma, Maria Letizia Bacchi Reggiani, Elisabetta Bertellini, Andrea Castelli, Irene Cavalli, Davide Colombo, Federico Crimaldi, Federica Damiani, Maurizio Fusari, Emiliano Gamberini, Giovanni Gordini, Cristiana Laici, Maria Concetta Lanza, Mirco Leo, Andrea Marudi, Giuseppe Nardi, Raffaella Papa, Antonella Potalivo, Emanuele Russo, Stefania Taddei, Guglielmo Consales, Iacopo Cappellini, V. Marco Ranieri, Carlo Alberto Volta, Claude Guérin, Savino Spadaro,

Abstract Background Prone positioning (PP) has been used to improve oxygenation in patients affected by the SARS-CoV-2 disease (COVID-19). Several mechanisms, including lung recruitment and better lung ventilation/perfusion matching, make a relevant rational for using PP. However, not all patients maintain the oxygenation improvement after returning to supine position. Nevertheless, no evidence exists that a sustained oxygenation response after PP is associated to outcome in mechanically ventilated ...

Tópico(s): Cardiac Arrest and Resuscitation

2021 - Springer Nature | Annals of Intensive Care

Artigo Acesso aberto Revisado por pares

Andrea Bearzotti, Lucia Fontana, Ilaria Fratoddi, Iole Venditti, Giuseppe Testa, Silvia Rasi, Viviana Gatta, M.V. Russo, Emiliano Zampetti, Paolo Papa, Antonella Macagnano,

Noble metal nanoparticles (MNPs) with controlled diameters in the range 5-15 nm, have been prepared by chemical wet reduction reactions starting from Au precursor in the presence of bifunctional thiolate, i.e. biphenyl-4,4′-dithiol. MNPs have been deposited on electrospinned titania nanofibers by dipping. The composite has been investigated at room temperature in resistive type device under UV irradiation. IV curves show properties of photoconduction and upon exposure towards sulphur dioxide (SO2) ...

Tópico(s): Gas Sensing Nanomaterials and Sensors

2015 - Elsevier BV | Procedia Engineering

Artigo Acesso aberto Revisado por pares

Emiliano Zampetti, Paolo Papa, Andrea Bearzotti, Antonella Macagnano,

In environments polluted by mercury vapors that are potentially harmful to human health, there is a need to perform rapid surveys in order to promptly identify the sources of emission. With this aim, in this work, a low cost, pocket-sized portable mercury measurement system, with a fast response signal is presented. It consists of a preconcentrator, able to adsorb and subsequently release the mercury vapour detected by a quartz crystal microbalance (QCM) sensor. The preconcentrator is based on an ...

Tópico(s): Analytical chemistry methods development

2021 - Multidisciplinary Digital Publishing Institute | Sensors

Artigo Acesso aberto Revisado por pares

Lorenzo Gamberini, Tommaso Tonetti, Savino Spadaro, Gianluca Zani, Carlo Alberto Mazzoli, Chiara Capozzi, Emanuela Giampalma, Maria Letizia Bacchi Reggiani, Elisabetta Bertellini, Andrea Castelli, Irene Cavalli, Davide Colombo, Federico Crimaldi, Federica Damiani, Alberto Fogagnolo, Maurizio Fusari, Emiliano Gamberini, Giovanni Gordini, Cristiana Laici, Maria Concetta Lanza, Mirco Leo, Andrea Marudi, Giuseppe Nardi, Irene Ottaviani, Raffaella Papa, Antonella Potalivo, Emanuele Russo, Stefania Taddei, Carlo Alberto Volta, V. Marco Ranieri, Marco Tartaglione, Valentina Chiarini, Virginia Buldini, Carlo Coniglio, Federico Moro, Nicola Cilloni, L Giuntoli, Angela Bellocchio, Emanuele Matteo, Giacinto Pizzilli, Antonio Daniele Pinna, Chiara Tartivita, Francesco Maria Di Matteo, Annalisa Marchio, Igor Bacchilega, Laura Bernabé, Sonia Guarino, Elena Mosconi, Luca Bissoni, Lorenzo Viola, Tommaso Meconi, Vittorio Pavoni, Aline Pagni, Patrizia Pompa Cleta, Marco Cavagnino, Anna Malfatto, Angelina Adduci, Silvia Pareschi, Gabriele Melegari, Jessica Maccieri, Elisa Marinangeli, Fabrizio Racca, Marco Verri, Giulia Falò, Elisabetta Marangoni, Francesco Bonì, Giulia Felloni, Federico Domenico Baccarini, Marina Terzitta, Stefano Maitan, Michele Imbriani, Paolo Emilio Orlandi, Giorgia Dalpiaz, Rita Golfieri, Federica Ciccarese, Antonio Poerio, Francesco Muratore, Fabio Ferrari, Martina Mughetti, Loredana Franchini, Ersenad Neziri, Marco Miceli, Maria Teresa Minguzzi, Lorenzo Mellini, Sara Piciucchi,

A large proportion of patients with coronavirus disease 2019 (COVID-19) develop severe respiratory failure requiring admission to the intensive care unit (ICU) and about 80% of them need mechanical ventilation (MV). These patients show great complexity due to multiple organ involvement and a dynamic evolution over time; moreover, few information is available about the risk factors that may contribute to increase the time course of mechanical ventilation.The primary objective of this study is to investigate ...

Tópico(s): Long-Term Effects of COVID-19

2020 - BioMed Central | Journal of Intensive Care

Artigo

Isidro Humberto Almeyda León, José Alfredo Sánchez-Salas, José Antonio Garzón-Tiznado,

... tres en el estado de Coahuila (El Tunal, Emiliano Zapata y Huachichil) e igual numero en el estado de Nuevo Leon (San Rafael, Cristal y Raices). Desde diciembre de 2003 hasta agosto de 2004, en cada sitio se realizaron colectas de insectos, plantas de papa (cultivada y plantas mostrencas), con los sintomas caracteristicos ...

Tópico(s): Plant Pathogenic Bacteria Studies

2008 - National Institute of Forestry, Agriculture and Livestock Research ( INIFAP ) | Revista Mexicana de Ciencias Agrícolas

Artigo Revisado por pares

Antonio Armando Caragliano, Rosario Papa, Antonio Pitrone, Nicola Limbucci, Sergio Nappini, Maria Ruggiero, Emiliano Visconti, Andrea Alexandre, R. Menozzi, Dario Luca Lauretti, Nicola Cavasin, Angela Alibrandi, Agostino Tessitore, Marcello Longo, Sergio Lucio Vinci,

Wide-necked brain aneurysms therapy remains a challenge for neurointerventionalists, mainly for the high recurrence rate. Low-profile stents make feasible the treatment of these aneurysms. In our multicenter series we analyzed clinical and angiographic results of Neuroform Atlas stent-assisted coiling. From January 2016 to March 2017, 113 wide-necked aneurysms were discovered with CTA, MRA and DSA. The Atlas stent-assisted coiling procedures were performed under general anesthesia with sequential ...

Tópico(s): Traumatic Brain Injury and Neurovascular Disturbances

2019 - Elsevier BV | Journal of Neuroradiology

Artigo Acesso aberto Revisado por pares

Ilaria Fratoddi, Sara Cerra, Tommaso A. Salamone, Raoul Fioravanti, Fabio Sciubba, Emiliano Zampetti, Antonella Macagnano, Amanda Generosi, Barbara Paci, Francesca A. Scaramuzzo, Roberto Matassa, Giuseppe Familiari, Chiara Battocchio, Martina Marsotto, Paolo Papa, Andrea Bearzotti,

Nanomaterials such as gold nanoparticles employed as solid-state sensors have attracted attention in recent years due to their ability to detect poisonous elements in the indoor/outdoor environment. Herein, chemoresistive sensors based on gold nanoparticles (AuNPs) functionalized with mixed thiol ligands were tested as sensing materials. Specifically, the electrical response of gold nanoparticles-based sensors was tested against Hg0vap, H2S, SO2, NH3, and relative humidity (RH) at room temperature. ...

Tópico(s): Gold and Silver Nanoparticles Synthesis and Applications

2021 - American Chemical Society | ACS Applied Nano Materials

Artigo

Emiliano Papa,

We have calculated the single-particle density of states (DOS) for a model of spinful Tomonaga-Luttinger liquid with a frequency dependent parameter ${K}_{c}$ of the charge sector (and ${K}_{s}=1$ of spin sector). Such a frequency dependence may originate from interactions with optical phonons. The DOS exhibits a power-law suppressed asymptotic behavior near $\ensuremath{\omega}=0$ with an exponent larger than 1, in agreement with previous results. For larger frequencies, but still not far away from the ...

Tópico(s): Physics of Superconductivity and Magnetism

2003 - American Physical Society | Physical review. B, Condensed matter

Artigo

Emiliano Papa,

In this paper we address some of the properties of quantum Hall line junctions (QHLJ) that occur near barriers separating electron gases on quantum Hall plateaus.In narrow barriers where electron tunneling can occur, the low energy physics of the QHLJ is described by the quantum sine-Gordon model. We propose procedures to study a sort of properties of these systems in relation with recent experimental studies of Kang {\it et al.}, Nature {\bf 403}, 59 (2000). We propose experimental ways of measuring ...

Tópico(s): Advanced Physical and Chemical Molecular Interactions

2007 - Cambridge University Press | Bulletin of the American Physical Society

Artigo

Emiliano Papa,

Department of Physics, The University of Texas, Austin, TX 78712(Dated: February 2, 2008)In this paper we introduce and study the correlation functions of a chiral one-dimensional electron modelintended to qualitatively represent narrow Hall bars separated into left and right sections by a penetrable barrier.The model has two parameters representing respectively interactions between top and bottom edges of the Hallbar and interactions between the edges on opposite sides of the barrier. We show that ...

Tópico(s): Magnetic properties of thin films

2006 - Cambridge University Press | Bulletin of the American Physical Society

Artigo

Emiliano Papa, A. H. MacDonald,

Tópico(s): Surface and Thin Film Phenomena

2005 - Cambridge University Press | Bulletin of the American Physical Society

Artigo

Emiliano Papa, Eris Runa,

In this paper we consider several methods for building the yield curve from swap rates. In particular given the complete list of swap rates, we obtain an analytic formula for the zero rate. A continuous limit of this equation is discussed and used in order to extract the continuous yield curve. In real world applications, a complete list of swap rates is rarely present, thus one needs "bootstrapping'" techniques. We review and compare several methods bootstrapping techniques and add some new bootstrapping ...

Tópico(s): Markov Chains and Monte Carlo Methods

2019 - RELX Group (Netherlands) | SSRN Electronic Journal