Results 81 to 90 of about 161,407 (287)

Dynamically driven renormalization group [PDF]

Journal of Statistical Physics, 1997
We present a detailed discussion of a novel dynamical renormalization group scheme: the Dynamically Driven Renormalization Group (DDRG). This is a general renormalization method developed for dynamical systems with non-equilibrium critical steady-state.
A. Vespignani, S. Zapperi, LORETO, Vittorio   +2 more
openaire   +6 more sources

Cation Mg‐Dominated Coherent Phonon Transport Leads to Anomalous Thermal Conductivity in Mg3Bi2

Advanced Energy Materials, EarlyView.
Weakly bonded cation Mg atoms in Mg3Bi2 enhance coherent phonon transport, contributing 40% to thermal conductivity at 600 K. A unified theoretical framework and experimental validation reveal that strong anharmonicity from cation Mg suppresses particle‐like transport via four‐phonon scattering.
Minhui Yuan, Zhen Tong, Qing Cao, Wenjie Li, Min Ruan, Jiahao Jiang, Jingyi Lyu, Yanglong Hou, Ran He, Jing Shuai   +9 more
wiley   +1 more source

Renormalization group coefficients and the S-matrix [PDF]

Journal of High Energy Physics, 2016
We show how to use on-shell unitarity methods to calculate renormalization group coefficients such as beta functions and anomalous dimensions. The central objects are the form factors of composite operators. Their discontinuities can be calculated via phase-space integrals and are related to corresponding anomalous dimensions.
Caron Huot, Simon, Wilhelm, Matthias
openaire   +5 more sources

Suppressed Thermal Conductivity in van der Waals Semiconductor SnS2 by Stacking Engineering

Advanced Energy and Sustainability Research, EarlyView.
Achieving low thermal conductivity is crucial for materials used for thermoelectric energy conversion. It is demonstrated that the lattice thermal conductivity of van der Waals semiconductor SnS2 can be significantly reduced by introducing 2H and 4H structures stacked along the c‐axis.
Han Yang, Changsheng Min, Chao Li, Yuan Yu, Bangzhi Ge, Chongjian Zhou   +5 more
wiley   +1 more source

Low-energy theorem revisited and OPE in massless QCD

Journal of High Energy Physics
We revisit a low-energy theorem (LET) of NSVZ type in SU(N) QCD with N f massless quarks derived in [1] by implementing it in dimensional regularization. The LET relates n-point correlators in the l.h.s.
Marco Bochicchio, Elisabetta Pallante
doaj   +1 more source

A Renormalization Group Procedure for Fiber Bundle Models

Frontiers in Physics, 2018
We introduce two versions of a renormalization group scheme for the equal load sharing fiber bundle model. The renormalization group is based on formulating the fiber bundle model in the language of damage mechanics.
Srutarshi Pradhan, Alex Hansen, Purusattam Ray, Purusattam Ray   +3 more
doaj   +1 more source

Compressibility Function and Speed of Sound in the Non‐Commutative Quantum Hadrodynamics Type‐I Model for Neutron Stars

Astronomische Nachrichten, EarlyView.
ABSTRACT We investigate the effects of a minimal measurable length on neutron stars, within the quantum hadrodynamics (QHD‐I) model modified by the Generalized Uncertainty Principle (GUP). Working in a deformed Poisson algebra framework, we incorporate GUP effects via a time‐invariant transformation of the phase space volume, effectively reducing the ...
João Gabriel Galli Gimenez, Dimiter Hadjimichef, César A. Zen Vasconcellos   +2 more
wiley   +1 more source

Density Matrix Renormalization Group Lagrangians [PDF]

, 2008
We introduce a Lagrangian formulation of the Density Matrix Renormalization Group (DMRG). We present Lagrangians which when minimised yield the optimal DMRG wavefunction in a variational sense, both within the general matrix product ansatz, as well as ...
Chan, Garnet Kin-Lic
core   +1 more source

Running of the heavy quark production current and 1/k potential in QCD [PDF]

, 2000
The 1/k contribution to the heavy quark potential is first generated at one loop order in QCD. We compute the two loop anomalous dimension for this potential, and find that the renormalization group running is significant.
A. A. Penin, A. Czarnecki, A. Falk, A. H. Hoang, A. H. Hoang, A. H. Hoang, A. H. Hoang, A. H. Hoang, A. Pineda, A. Pineda, A. Pineda, A. V. Manohar, A. V. Manohar, A. V. Manohar, Aneesh V. Manohar, B. A. Kniehl, B. A. Kniehl, B. Blok, B. Grinstein, C. Bauer, E. Eichten, G. T. Bodwin, G. T. Bodwin, H. W. Griesshammer, Iain W. Stewart, J. C. Collins, K. Melnikov, M. Beneke, M. Beneke, M. Beneke, M. E. Luke, M. Luke, M. Luke, M. Luke, M. Peter, N. Brambilla, N. Brambilla, N. Brambilla, N. Brambilla, O. Yakovlev, P. Labelle, S. Coleman, S. N. Gupta, S. Titard, T. Mehen, T. Nagano, W. E. Caswell, Y. Schröder, Y.-Q. Chen   +48 more
core   +5 more sources

Quasi‐invariance of Gaussian measures for the 3d$3d$ energy critical nonlinear Schrödinger equation

Communications on Pure and Applied Mathematics, EarlyView.
Abstract We consider the 3d$3d$ energy critical nonlinear Schrödinger equation with data distributed according to the Gaussian measure with covariance operator (1−Δ)−s$(1-\Delta)^{-s}$, where Δ$\Delta$ is the Laplace operator and s$s$ is sufficiently large. We prove that the flow sends full measure sets to full measure sets. We also discuss some simple
Chenmin Sun, Nikolay Tzvetkov
wiley   +1 more source