Results 31 to 40 of about 855,445 (292)

Effective field theory out of equilibrium: Brownian quantum fields

New Journal of Physics, 2015
The emergence of an effective field theory out of equilibrium is studied in the case in which a light field—the system—interacts with very heavy fields in a finite temperature bath.
D Boyanovsky
doaj   +1 more source

Real-time diagram technique for instantonic systems

Journal of High Energy Physics, 2023
The Schwinger-Keldysh diagram technique is usually involved in the calculation of real-time in-in correlation functions. In the case of a thermal state, one can analytically continue imaginary-time Matsubara correlation functions to real times ...
Nikita Kolganov
doaj   +1 more source

Mean Field Theory For Non-Equilibrium Network Reconstruction

, 2011
There has been recent progress on the problem of inferring the structure of interactions in complex networks when they are in stationary states satisfying detailed balance, but little has been done for non-equilibrium systems.
Hertz, John A., Roudi, Yasser
core   +1 more source

Non-equilibrium dynamics of a thermal plasma in a gravitational field [PDF]

, 1998
We introduce functional methods to study the non-equilibrium dynamics of a quantum massless scalar field at finite temperature in a gravitational field.
A. Campos, A. Campos, A. Campos, A. Einstein, A. Einstein, A. J. Niemi, A. J. Niemi, A. Matacz, A. Matacz, A. Niégawa, A. O. Caldeira, A. P. de Almeida, A. Rebhan, A. Rebhan, Antonio Campos, B. L. Hu, B. S. DeWitt, B.-L. Hu, B.-L. Hu, B.-L. Hu, B.-L. Hu, B.-L. Hu, B.-L. Hu, B.-L. Hu, B.-L. Hu, C.-I. Kuo, D. Boyanovsky, D. Boyanovsky, D. J. Gross, D. S. Jones, E. Calzetta, E. Calzetta, E. Calzetta, E. Calzetta, E. Calzetta, E. Calzetta, E. E. Flanagan, E. Mottola, F. C. Lombardo, F. Cooper, F. T. Brandt, F. T. Brandt, G. W. Semenoff, G. Zhou, H. A. Weldon, H. B. Callen, H. B. Callen, H. Nachbagauer, H. Nachbagauer, H. Nachbagauer, H. Nyquist, J. Frenkel, J. J. Halliwell, J. P. Paz, J. Schwinger, J. Schwinger, J. Weber, K. Chou, L. Chen, L. Landau, L. P. Kadanoff, L. V. Keldysh, M. Gleiser, M. Le Bellac, N. D. Birrell, N. G. Phillips, N. P. Landsman, P. C. Martin, P. Candelas, P. M. Bakshi, P. M. Bakshi, P. S. Gribosky, R. D. Jordan, R. D. Jordan, R. Jackiw, R. Kubo, R. Kubo, R. Kubo, R. L. Kobes, R. Mills, R. P. Feynman, R. P. Feynman, S. A. Ramsey, S. A. Ramsey, U. Kraemmer, W. Bernard   +85 more
core   +2 more sources

Time evolution of correlation functions in non-equilibrium field theories [PDF]

Physics Letters B, 1998
We investigate the non-equilibrium properties of an N-component scalar field theory. The time evolution of the correlation functions for an arbitrary ensemble of initial conditions is described by an exact functional differential equation. In leading order in the 1/N expansion the system can be understood in terms of infinitely many conserved ...
Bettencourt, Luis M. A., Wetterich, Christof   +1 more
openaire   +2 more sources

Quantum critical phase of FeO spans conditions of Earth’s lower mantle

Nature Communications
Seismic and mineralogical studies have suggested regions at Earth’s core-mantle boundary may be highly enriched in FeO, reported to exhibit metallic behavior at extreme pressure-temperature (P–T) conditions.
Wai-Ga D. Ho, Peng Zhang, Kristjan Haule, Jennifer M. Jackson, Vladimir Dobrosavljević, Vasilije V. Dobrosavljevic   +5 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Probing Krylov complexity in scalar field theory with general temperatures

Journal of High Energy Physics
Krylov complexity characterizes the operator growth in the quantum many-body systems or quantum field theories. The existing literatures have studied the Krylov complexity in the low temperature limit in the quantum field theories.
Peng-Zhang He, Hai-Qing Zhang
doaj   +1 more source

A hydrodynamic approach to non-equilibrium conformal field theories [PDF]

Journal of Statistical Mechanics: Theory and Experiment, 2016
We develop a hydrodynamic approach to non-equilibrium conformal field theory. We study non-equilibrium steady states in the context of one-dimensional conformal field theory perturbed by the $T\bar T$ irrelevant operator. By direct quantum computation, we show, to first order in the coupling, that a relativistic hydrodynamic emerges, which is a simple ...
Bernard, Denis, Doyon, Benjamin
openaire   +4 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source