Results 81 to 90 of about 1,246,496 (323)
Zero-mode analysis of quantum statistical physics
, 2008 We present a unified formulation for quantum statistical physics based on the representation of the density matrix as a functional integral. We identify the stochastic variable of the effective statistical theory that we derive as a boundary ...
A. Bessa +13 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Cognitive impairment, fatigue, and depression are common in multiple sclerosis (MS), potentially due to disruption of regional functional connectivity caused by white matter (WM) lesions. We explored whether WM lesions functionally connected to specific brain regions contribute to these MS‐related manifestations.
Alessandro Franceschini +7 more
wiley +1 more source
Collective dynamics of swarmalators with higher-order interactions
Communications PhysicsHigher-order interactions shape collective dynamics, but how they affect transitions between different states in swarmalator systems is yet to be determined. To that effect, we here study an analytically tractable swarmalator model that incorporates both
Md Sayeed Anwar +3 more
doaj +1 more source
Thermodynamic efficiency in dissipative chemistry
Nature Communications, 2019 Open chemical systems operate out of equilibrium, providing more opportunities than closed systems, but a theoretical framework to describe their performance is lacking. Here, the authors assess the efficiency of two classes of dissipative processes with
Emanuele Penocchio +2 more
doaj +1 more source
Entropy and its Application to Urban Systems
Entropy, 2019 Since its conception over 150 years ago, entropy has enlightened and confused scholars and students alike, from its origins in physics and beyond. More recently, it has been considered within the urban context in a rather eclectic range of applications ...
Ben Purvis, Yong Mao, Darren Robinson
doaj +1 more source
Detecting composite orders in layered models via machine learning
New Journal of Physics, 2020 Determining the phase diagram of systems consisting of smaller subsystems ‘connected’ via a tunable coupling is a challenging task relevant for a variety of physical settings.
W Rządkowski +4 more
doaj +1 more source
Non equilibrium statistical physics with fictitious time
, 2005 Problems in non equilibrium statistical physics are characterized by the absence of a fluctuation dissipation theorem. The usual analytic route for treating these vast class of problems is to use response fields in addition to the real fields that are ...
A. Onuki +5 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background Poststroke fatigue (PSF) and frailty share substantial overlap in their manifestations, yet previous research has yielded conflicting results due to the use of heterogeneous frailty assessment tools. Objective To evaluate the independent impact of frailty on PSF using a unified measurement system (Tilburg Frailty Indicator, TFI ...
Chuan‐Bang Chen +6 more
wiley +1 more source
Gravitational wave propagation in a geometric condensate in Starobinsky cosmology
European Physical Journal C: Particles and FieldsIn this paper we propose a new paradigm for cosmology: a time dependent scalar condensate background originated from the quadratic $$(R + \alpha R^2)$$ ( R + α R 2 ) Starobinsky model, where R is the Ricci scalar and $$\alpha $$ α the coupling constant ...
Aurindam Mondal, Subir Ghosh
doaj +1 more source
Entropy, 2010 The principle of least action provides a holistic worldview in which Nature in its entirety and every detail is described in terms of actions. Each and every action is ultimately composed of one or multiple of the most elementary actions which relates to
Arto Annila
doaj +1 more source