Results 181 to 190 of about 1,476,489 (293)

ß-functions and the exact renormalization group

Nuclear Physics B, 1988
Abstract We relate s-functions to the flow of relevant couplings in the exact renormalization group. The specific case of a cutoff γφ 4 theory in four dimensions is discussed in detail. The underlying idea of convergence of the flow of effective lagrangians is developed to identify the s-functions.
Jun Liu, James Hughes
openaire   +2 more sources

Excited State Structure and Decay Rates for Aggregates

Aggregate, Volume 6, Issue 4, April 2025.
Delocalized excitons in a disordered energy landscape of molecular aggregates, created by external excitation and undergoing decay influenced by phonon and thermal fluctuations. ABSTRACT Electronic excited state in molecular aggregate or exciton states continue to attract great attention due to the increasing demands for applications of molecular ...
Zhigang Shuai, Qi Sun, Jiajun Ren, Tong Jiang, Weitang Li   +4 more
wiley   +1 more source

Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo2P2

Advanced Physics Research, Volume 4, Issue 4, April 2025.
Electron‐boson interactions in the weak itinerant ferromagnet LaCo2P2 are investigated, addressing both surface and bulk properties. The intricate renormalization of electronic states due to electron‐phonon and electron‐magnon interactions is examined, highlighting their distinct impacts on the electronic structure.
D. Yu. Usachov, K. Ali, G. Poelchen, M. Mende, S. Schulz, M. Peters, K. Bokai, I. Yu. Sklyadneva, V. Stolyarov, E. V. Chulkov, K. Kliemt, S. Paischer, P. A. Buczek, R. Heid, F. Hempel, M. Ruesing, A. Ernst, C. Krellner, S. V. Eremeev, D. V. Vyalikh   +19 more
wiley   +1 more source

Functional Renormalization Group for Interacting Fermi Systems [PDF]

, 2003
Walter Metzner
openalex   +1 more source

Multitrajectories of Frailty and Depression With Cognitive Function: Findings From the Health and Retirement Longitudinal Study

Journal of Cachexia, Sarcopenia and Muscle, Volume 16, Issue 2, April 2025.
ABSTRACT Background Little is known about the joint associations between trajectories of frailty and depression with cognitive function. This study aims to explore the multitrajectories of frailty and depression and their joint impact on cognition. Methods A total of 8600 participants from the Health and Retirement Study (HRS) (1996–2018) were analysed
Chengxiang Hu, Xiaoyue Sun, Zhirong Li, Yue He, Beibei Han, Zibo Wu, Siyu Liu, Lina Jin   +7 more
wiley   +1 more source

Two-Pomeron Interaction

Universe
We study the interaction of two discrete pomeron fields while considering mass mixing and the general structure of the interaction potential for pomerons within the framework for a functional renormalization group analysis of Reggeon field theory.
Luis Cancino Arancibia, Carlos Contreras
doaj   +1 more source

Synthesis, Characterization, and Measurement of New 1144‐Type Iron‐Based Superconductors: A Systematic Review

Nano Select, Volume 6, Issue 4, April 2025.
XYFe4As4 samples were synthesized by the Flux Method and Solid‐State Reaction Method (SSR). The flux method is a viable method for synthesizing 1144‐type single‐crystalline FeBSCs that uses a molten metal salt, called flux, to dissolve precursor materials and promote crystal growth of the desired XYFe4As4 sample.
Gedefaw Mebratie, Tamiru Negussie, Gebregziabher Kahsay   +2 more
wiley   +1 more source

Higher Derivative Gravity from the Universal Renormalization Group Machine [PDF]

PoS(EPS-HEP2011)124, 2011
We study the renormalization group flow of higher derivative gravity, utilizing the functional renormalization group equation for the average action. Employing a recently proposed algorithm, termed the universal renormalization group machine, for solving the flow equation, all the universal features of the one-loop beta-functions are recovered.
arxiv  

Comparative study of theoretical methods for nonequilibrium quantum transport

, 2010
We present a detailed comparison of three different methods designed to tackle nonequilibrium quantum transport, namely the functional renormalization group (fRG), the time-dependent density matrix renormalization group (tDMRG), and the iterative ...
Eckel, J., Egger, R., Heidrich-Meisner, F., Jakobs, S. G., Pletyukhov, M., Thorwart, M.   +5 more
core   +1 more source

Computation screening for incorrectly determined cocrystal structures

Acta Crystallographica Section B, Volume 81, Issue 2, Page 208-216, April 2025.
Computational salt–cocrystal differentiation, based on density functional theory improved by up‐to‐date functionals rSCAN and r2SCAN, has been tested for 404 structures. Several problematic structures have been redetermined.Pharmaceutical solid forms, like salts and cocrystals, play a crucial role in drug formulation.
Simona Chalupná, Michal Hušák, Jan Čejka, František Fňukal, Jiří Klimeš   +4 more
wiley   +1 more source