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We theoretically describe the charge ordering (CO) metal-insulator transition based on a quasi-one-dimensional extended Hubbard model, and investigate the finite temperature ($T$) properties across the transition temperature, $T_{\rm CO}$.…

Strongly Correlated Electrons · Physics 2015-05-18 Hideo Yoshioka , Masahisa Tsuchiizu , Yuichi Otsuka , Hitoshi Seo

This paper presents a symmetric unified transport (UT) compact model for metal-oxide-semiconductor field-effect transistors (MOSFETs) that bridges drift-diffusion (DD) and ballistic transport (BT) regimes. The proposed model self…

Mesoscale and Nanoscale Physics · Physics 2026-05-27 Chien-Ting Tung

A toy statistical model which mimics localized-to-itinerant electron transitions is introduced. We consider a system of two types of charge carriers: (1) localized ones, and (2) itinerant ones. There is chemical equilibrium between these…

Strongly Correlated Electrons · Physics 2021-05-04 Navinder Singh

The consequences of the gauge-coupling dependent normalization-factor of $1/g^{\alpha}$ in the transfer-matrix of 2d U(1) lattice gauge theory are explored. It is seen by the $\alpha=1$ choice that the lowest energy develops a minimum at…

High Energy Physics - Lattice · Physics 2020-08-24 Narges Vadood , Amir H. Fatollahi

We argue the coherent part of the spectral weight always contribute symmetrically to the STM spectrum at sufficiently low energy and the tunneling asymmetry is a manifestation of the incoherent part of the electron spectrum. By subtracting…

Superconductivity · Physics 2007-05-23 Tao Li , Fan Yang , Yong-Jin Jiang

A fourth-order Schr\"{o}dinger equation for the description of charge transport in semiconductors in the ballistic regime is proposed with the inclusion of non-parabolic effects in the dispersion relation in order to go beyond the simple…

Mathematical Physics · Physics 2025-07-15 Giulia Elena Aliffi , Giovanni Nastasi , Vittorio Romano

Menke et al. recently claimed that superconductivity (SC) in the $\kappa$-phase organic charge-transfer solids (CTS) can be understood within the two-dimensional half-filled anisotropic triangular-lattice Hubbard model. Experimentally,…

Superconductivity · Physics 2025-04-28 Rupali Jindal , Sumit Mazumdar , R. Torsten Clay

We propose steady-state electron transport based on coherent transfer by adiabatic passage (CTAP) in a linearly arranged triple quantum dot with leads attached to the outer dots. Its main feature is repeated steering of single electrons…

Mesoscale and Nanoscale Physics · Physics 2013-01-17 Jan Huneke , Gloria Platero , Sigmund Kohler

The conventional weak-coupling expansion for the pressure of a hot plasma shows no sign of convergence unless the the coupling constant $g$ is tiny. In this talk, I discuss screened perturbation theory (SPT) which is a reorganization of the…

High Energy Physics - Phenomenology · Physics 2017-08-23 Jens O. Andersen

We calculate the CP-violating polarization asymmetry of tt-bar, delta =[ sigma(ee-bar --> t(-)t-bar(-))-sigma(ee-bar --> t(+)t-bar(+)) ]/ sigma(ee-bar --> tt-bar), for the most general tt-bar gamma/Z couplings without dropping any…

High Energy Physics - Phenomenology · Physics 2009-10-31 Zenro Hioki , Kazumasa Ohkuma

We formulate a scattering theory of polarization and heat transport through a ballistic ferroelectric point contact. We predict a polarization current under either an electric field or a temperature difference that depends strongly on the…

Mesoscale and Nanoscale Physics · Physics 2025-07-03 Ping Tang , Ryo Iguchi , Ken-ichi Uchida , Gerrit E. W. Bauer

We investigate the zero-temperature transport of electrons in a model of quantum dot arrays with a disordered background potential. One effect of the disorder is that conduction through the array is possible only for voltages across the…

Disordered Systems and Neural Networks · Physics 2007-05-23 Shantenu Jha , A. Alan Middleton

By means of first-principles methods we analyze the optical response of transparent dense sodium as a function of applied pressure. We discover an unusual kind of charge-transfer exciton that proceeds from the interstitial distribution of…

Materials Science · Physics 2015-05-18 Matteo Gatti , Ilya V. Tokatly , Angel Rubio

The electric charge renormalization constant, as defined in the Thomson limit, is expressed in terms of self-energies of the photon-Z-boson system in an arbitrary R_\xi-gauge to all perturbative orders. The derivation as carried out in the…

High Energy Physics - Phenomenology · Physics 2021-03-24 Stefan Dittmaier

The unitary transformation of path-integral differential measure is described. The main properties of perturbation theory in the phase space of action-angle, energy-time variables are investigated. The measure in cylindrical coordinates is…

High Energy Physics - Theory · Physics 2007-05-23 J. Manjavidze

Traditionally the charge ratchet effect is considered as a consequence of either the spatial symmetry breaking engineered by asymmetric periodic potentials, or time asymmetry of the driving fields. Here we demonstrate that electrically and…

Mesoscale and Nanoscale Physics · Physics 2009-11-18 Sergey Smirnov , Dario Bercioux , Milena Grifoni , Klaus Richter

We show that charge fluctuation processes are crucial for the nonlinear heat conductance through an interacting nanostructure, even far from a resonance. We illustrate this for an Anderson quantum dot accounting for the first two leading…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 Niklas M. Gergs , Christoph B. M. Hörig , Maarten R. Wegewijs , Dirk Schuricht

Charge separation properties, that is the ability of a chromophore, or a chromophore/semiconductor interface, to separate charges upon light absorption, are crucial characteristics for an efficient photovoltaic device. Starting from this…

Chemical Physics · Physics 2019-12-05 Thibaud Etienne , Mariachiara Pastore

The modified perturbation theory (MPT), based on direct expansion of probabilities instead of amplitudes, allows one to avoid divergences in the phase-space integrals resulting from production and decay of unstable particles. In the present…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. L. Nekrasov

A recent ontological variant of Cramer's Transactional Interpretation, called "Possibilist Transactional Interpretation" or PTI, is extended to the relativistic domain. The present interpretation clarifies the concept of 'absorption,' which…

Quantum Physics · Physics 2012-06-25 Ruth E. Kastner
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