Results 31 to 40 of about 733,069 (182)

Statistical field theory and effective action method for scalar active matter

Physical Review Research, 2020
We employ statistical field theory techniques for coarse graining the steady-state properties of active Ornstein-Uhlenbeck particles. The computation is carried out in the framework of the unified colored noise approximation that allows an effective ...
M. Paoluzzi, C. Maggi, A. Crisanti
doaj   +1 more source

The Status of Geometry and Matter in the Reinterpreted WdW Equation

Physical Sciences Forum, 2023
This paper shows that the field defined by the Wheeler–DeWitt equation for pure gravity is neither a standard gravitational field nor the field representing a particular universe.
Avadhut V. Purohit
doaj   +1 more source

Three-Dimensional Time and One-Dimensional Space: A Basic Reformulation of Physical Reality

Reports in Advances of Physical Sciences
This paper proposes a radical reformulation of spacetime structure, positing that reality consists basically of one spatial dimension and three temporal dimensions, with our perceived three-dimensional space evolving as a projection from this underlying ...
Gunther Kletetschka
doaj   +1 more source

On the asymptotic events of a Markov chain

International Journal of Mathematics and Mathematical Sciences, 1979
In this paper we investigate some structure properties of the tail σ-field and the invariant σ-field of both homogeneous and nonhomogeneous Markov chains as representations for asymptotic events, descriptions of completely nonatomic and atomic sets and ...
Harry Cohn
doaj   +1 more source

Kaluza–Klein reduction on a maximally non-Riemannian space is moduli-free

Physics Letters B, 2019
We propose a novel Kaluza–Klein scheme which assumes the internal space to be maximally non-Riemannian, meaning that no Riemannian metric can be defined for any subspace.
Kyoungho Cho, Kevin Morand, Jeong-Hyuck Park   +2 more
doaj   +1 more source

The Geometric Proca–Weyl Field as a Candidate for Dark Matter

Universe
We consider the Weyl invariant theory of gravity as an alternative approach to the problem of the origin of dark matter. According to this theory, the geometric Weyl 1-form effectively behaves as a Proca field.
Mauro Duarte, Fábio Dahia, Carlos Romero   +2 more
doaj   +1 more source

Kirjandusteoreetilise ühendvälja poole / Unified Theoretical Field Perspectives

Methis: Studia Humaniora Estonica, 2013
Estonian cultural studies constitute a rich and promising area of research. This area is uniquely positioned to bring together the vast array of methodological approaches that increasingly have come to define our postmodern mindscape.
Arne Merilai
doaj   +1 more source

Accretion Disks and Dynamos: Toward a Unified Mean Field Theory

, 2012
Conversion of gravitational energy into radiation in accretion discs and the origin of large scale magnetic fields in astrophysical rotators have often been distinct topics of research. In semi-analytic work on both problems it has been useful to presume
Alexakis A, Balbus S A, Beckwith K, Bellan P M, Blackman E G, Blackman E G, Blackman E G, Blackman E G, Blackman E G, Blackman E G, Blackman E G, Blandford R D, Bodo G, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Davis S W, Eric G Blackman, Field G B, Guan X, Hawley J F, Hubbard A, Hubbard A, Ji H, Kleeorin N I, Krause F, Kuncic Z, Kuncic Z, Lovelace R V E, Moffatt H K, Oishi J S, Parker E N, Pessah M E, Quataert E, Rekowski M V, Romanova M M Ustyugova G V Koldoba A V Lovelace R V E, Rüdiger G, Shakura N I, Shi J, Sorathia K A, Subramanian K, Tagger M, Tan J C, Tout C A, Treves A, Uzdensky D A, Vishniac E T, Vishniac E T, Vishniac E T, Wang Y-M   +50 more
core   +1 more source

Unified molecular field theory of nematic, smectic-A, and smectic-C phases [PDF]

, 2013
A unified mean-field molecular theory of nematic (NU), smectic A (SmA), and smectic C (SmC) liquid crystal phases, composed of uniaxial nonpolar molecules, is developed taking into account the variation of all orientational and translational order ...
C. G. Gray, G. Pająk, J. M. Czerwiec, M. A. Osipov, M. A. Osipov   +4 more
core   +1 more source

Holomorphic unified field theory of gravity and the standard model

European Physical Journal C: Particles and Fields
We present a single holomorphic framework in which gravity, all Standard Model interactions, and their couplings to charges and currents emerge from one geometric action on a four-complex dimensional manifold.
J. W. Moffat, E. J. Thompson
doaj   +1 more source