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We compute the electron diffusion thermopower at compressible Quantum Hall states corresponding to even denominator fractions in the framework of the composite fermion approach. It is shown that the deviation from the linear low temperature…

Condensed Matter · Physics 2009-10-28 D. V. Khveshchenko

In this paper, we consider a reaction-diffusion system describing the propagation of flames under the assumption of ignition-temperature kinetics and fractional reaction order. It was shown in [3] that this system admits a traveling front…

Analysis of PDEs · Mathematics 2024-02-29 Amanda Matson , Claude-Michel Brauner , Peter V. Gordon

Vector Schwinger model with a mass term for the photon, describing 2D electrodyn amics with massless fermions, studied by us recently, represents a new class of models. This theory becomes gauge-invariant when studied on the light-front.…

High Energy Physics - Theory · Physics 2008-09-08 Usha Kulshreshtha

The two-point Green function of the massive scalar $(3+1)$-quantum field theory with $\lambda\phi^4$ interaction at finite temperature is evaluated up to the 2nd order of perturbation theory. The averaging on the vacuum fluctuations is…

High Energy Physics - Theory · Physics 2007-05-23 A. I. Bugrij , L. L. Jenkovszky , V. N. Shadura

In this paper we provide exact expressions for propagators of noncommutative Bosonic or Fermionic field theories after adding terms of the Grosse-Wulkenhaar type in order to ensure Langmann-Szabo covariance. We emphasize the new Fermionic…

High Energy Physics - Theory · Physics 2008-11-26 R. Gurau , V. Rivasseau , F. Vignes-Tourneret

We study the finite temperature properties of the gauge theory of nonrelativistic fermions by using RPA and ladder approximation. This gauge theory is relevant to two interesting systems: high-Tc superconductivity and electrons in the…

Condensed Matter · Physics 2009-10-28 M. Onoda , I. Ichinose , T. Matsui

A problem of the definition of the heat transported in thermomagnetic phenomena has been well realized in the late sixties, but not solved up to date. Ignoring this problem, numerous recent theories grossly overestimate the thermomagnetic…

Superconductivity · Physics 2007-08-08 A. Sergeev , M. Yu. Reizer , V. Mitin

In this Letter we theoretically study physical properties of a model of heavy fermion $d-f$ hybrid. In the studied model two species of fermions have dispersions with different masses, one being much heavier than the other. Hybridization…

Strongly Correlated Electrons · Physics 2026-04-29 Anzhelika V. Buskina , Vladimir A. Zyuzin

Results obtained recently in Phys. Rev. Lett. 108, 120603 (2012) by Cleuren et al. apparently contradict to the third law of thermodynamics. We discuss a scenario for resolving this contradiction, and show that this scenario is pertinent…

Statistical Mechanics · Physics 2013-02-19 Armen E. Allahverdyan , Karen V. Hovhannisyan , Guenter Mahler

We comment on various incorrect claims made in a recent paper by Grosu et al. (cond-mat/0101392).

Statistical Mechanics · Physics 2007-05-23 D. Belitz , T. R. Kirkpatrick

The hot electron magnetotransport in a spin-valve transistor has been theoretically explored at finite temperatures. We have explored the parallel and anti-parallel collector current changing the relative spin orientation of the…

Condensed Matter · Physics 2009-11-07 Jisang Hong

We consider the non-analytic temperature dependences of the specific heat coefficient, C(T)/T, and spin susceptibility, \chi_{s} (T), of 2D interacting fermions beyond the weak-coupling limit. We demonstrate within the Luttinger-Ward…

Strongly Correlated Electrons · Physics 2009-11-11 Andrey V. Chubukov , Dmitrii L. Maslov , Suhas Gangadharaiah , Leonid I. Glazman

We present the current status of lattice simulations with N_f=2 maximally twisted mass Wilson fermions at finite temperature. In particular, the determination of the thermal transition temperature is discussed.

In this Comment we show that the temperature-dependent effective Hamiltonian derived by Reslen {\it et al} [Europhys. Lett., {\bf 69} (2005) 8] or that one by Liberti and Zaffino [arXiv:cond-mat/0503742] for the Dicke model cannot be…

Quantum Physics · Physics 2007-05-23 J. G. Brankov , N. S. Tonchev , V. A. Zagrebnov

We develop a nonperturbative zero-temperature theory for the dynamic response functions of interacting one-dimensional spin-1/2 fermions. In contrast to the conventional Luttinger liquid theory, we take into account the nonlinearity of the…

Strongly Correlated Electrons · Physics 2010-12-16 Thomas L. Schmidt , Adilet Imambekov , Leonid I. Glazman

The general correlations between massless fermions are calculated in the Schwinger model at arbitrary temperature. The zero temperature calculations on the plane are reviewed and clarified. Then the finite temperature fermionic Green's…

High Energy Physics - Theory · Physics 2009-10-28 James V. Steele , Ajay Subramanian , Ismail Zahed

Some time ago Kaplan proposed a new model for the description of chiral fermions on the lattice by adding an extra dimension for the fermions. A variant of this proposal was introduced by Shamir and can be used to describe vector-like…

High Energy Physics - Lattice · Physics 2007-05-23 Andreas Jaster

We present a novel candidate for cold dark matter consisting of condensed Cooper pairs in a theory of interacting fermions with broken chiral symmetry. Establishing the thermal history from the early radiation era to the present, the…

High Energy Physics - Phenomenology · Physics 2025-05-14 Guanming Liang , Robert R. Caldwell

We extend the Schwinger-Dyson equation (SDE) on the complex plane, which was treated in our previous research, to finite temperature. As a simple example, we solve the SDE for a model with four-fermion interactions in the (1+1) space-time…

High Energy Physics - Phenomenology · Physics 2024-07-09 Hidekazu Tanaka , Shuji Sasagawa

We investigate the properties of a dressed electron which reduces, in a particular class of gauges, to the usual fermion. A one loop calculation of the propagator is presented. We show explicitly that an infra-red finite, multiplicative,…

High Energy Physics - Theory · Physics 2009-10-30 Emili Bagan , Martin Lavelle , David McMullan