Results 71 to 80 of about 161,407 (287)

Renormalization Group and Probability Theory

, 2000
The renormalization group has played an important role in the physics of the second half of the twentieth century both as a conceptual and a calculational tool.
Beccaria, Benettin, Benfatto, Bleher, Bleher, Bleher, Brezin, Brydges, Brydges, Cassandro, Cassandro, Cassandro, Collet, De Angelis, Di Castro, Di Castro, Dobrushin, Fisher, G. Jona-Lasinio, Gallavotti, Gallavotti, Hegerfeldt, Ibragimov, Jona-Lasinio, Jona-Lasinio, Jona-Lasinio, Jona-Lasinio, Jona-Lasinio, Kadanoff, Khinchin, Linnik, Mitter, Mitter, Oseledec, Sinai, Sinai, Wilson, Wilson, Wilson   +38 more
core   +1 more source

Inflation and nonequilibrium renormalization group [PDF]

, 2006
We study de spectrum of primordial fluctuations and the scale dependence of the inflaton spectral index due to self-interactions of the field. We compute the spectrum of fluctuations by applying nonequilibrium renormalization group techniques.Comment: 6 ...
Ballesteros G, Boyanovsky D de Vega H J Sanchez N G, Esteban Calzetta, Juan Zanella, Keldysh L V, Keldysh L V, Liguori M, Matarrese S, Starobinsky A, Wu C-H Ng K-W Lee W Lee D-S Charng Y-Y, Zanella J Calzetta E   +10 more
core   +3 more sources

Inhaling Eugenol Inhibits NAFLD by Activating the Hepatic Ectopic Olfactory Receptor Olfr544 and Modulating the Gut Microbiota

Advanced Science, EarlyView.
Inhalable eugenol (EUG) from clove oil attenuates NAFLD by activating hepatic olfactory receptor Olfr544, triggering cAMP/PKA/CREB signaling to enhance lipolysis/oxidation. EUG concurrently restores gut microbiota, enriching probiotics (L. reuteri XR23/L. johnsonii XR25) and metabolites (IPA/5‐HIAA) that suppress lipogenesis.
Xiao‐Ran Wang, Zhan‐Zhan Li, Shu‐Ding Sun, Ya‐Gang Song, Jin‐Xin Miao, Xiang‐Xiang Wu, Yong‐Li Han, Xiao‐Lei Zhang, Wen‐Jing Chen, Qing‐Hua Wang, Yu Zhang, Yiping Fu, Yu‐ting Liu, Lin‐yan Lang, Wen‐Xia Zhao, Ming‐San Miao   +15 more
wiley   +1 more source

Renormalization group independence of Cosmological Attractors

Physics Letters B, 2017
The large class of inflationary models known as α- and ξ-attractors gives identical cosmological predictions at tree level (at leading order in inverse power of the number of efolds).
Jacopo Fumagalli
doaj   +1 more source

Renormalization Group Improved BFKL Equation [PDF]

, 1999
I report on the recent proposal of a generalized small-x equation which, in addition to exact leading and next-to-leading BFKL kernels, incorporates renormalization group constraints in the relevant collinear limits.Comment: Talk presented at DIS99 ...
Camici, Camici, Fadin, Marcello Ciafaloni   +3 more
core   +3 more sources

Understanding the Relevance of Percolation on Charge Transport in Random ZnO Nanowire Networks

Advanced Electronic Materials, EarlyView.
Conductivity in random nanowire networks remains challenging due to arbitrary geometries and conduction pathways. An innovative universalized percolation model combined with a shortest‐path algorithm addresses these limitations, accurately capturing tunneling and percolative conduction in ZnO nanowires.
Ridvan Ergun, Iddo Amit, Andrew J. Gallant, Del Atkinson, Dagou A. Zeze   +4 more
wiley   +1 more source

Constraints on beta functions in field theories

SciPost Physics, 2022
The $\beta$-functions describe how couplings run under the renormalization group flow in field theories. In general, all couplings that respect the symmetry and locality are generated under the renormalization group flow, and the exact renormalization
Han Ma, Sung-Sik Lee
doaj   +1 more source

Hard-soft renormalization and the exact renormalization group [PDF]

Nuclear Physics B, 1998
The Wilsonian exact renormalization group gives a natural framework in which ultraviolet and infrared divergences can be treated separately. In massless QED we introduce, as the only mass parameter, a renormalization scale $ _R > 0$. We prove, using the flow equation technique, that infrared convergence is a necessary consequence of any zero ...
M. Pernici, M. Raciti, F. Riva
openaire   +3 more sources

Determining Exciton Diffusion Length in Organic Semiconductors: Unifying Macro‐ and Microscopic Perspectives

Advanced Energy Materials, EarlyView.
Exciton diffusion length in organic semiconductor films is determined from encounter/annihilation rates. Non‐normalized exciton densities and proper intrinsic lifetime reference avoid over‐parametrization of the fits. Monte Carlo Simulation of individual molecule‐to‐molecule hops reproduce these results (②) when matching lattice constant and hoping ...
Wenchao Yang, Catherine S. Pursglove De Castro, Safakath Karuthedath, Yuliar Firdaus, Nisreen Alshehri, Si Chen, Diego Rosas Villalva, Christopher E. Petoukhoff, Amr Dahman, Derya Baran, Thomas D. Anthopoulos, Frédéric Laquai, Julien Gorenflot   +12 more
wiley   +1 more source

A note on defect stability in d = 4 − ε

Journal of High Energy Physics
We explore the space of scalar line, surface and interface defect field theories in d = 4 − ε by examining their stability properties under generic deformations.
William H. Pannell
doaj   +1 more source