Results 101 to 110 of about 105,688 (202)

Modified models of a free boson string and their solutions

Қарағанды университетінің хабаршысы. Физика сериясы, 2019
In this paper we consider the modified models of a free boson string and examine their dynamics. Modified models of the boson string are investigated from the point of view of the second order formalism (the Polyakov action).
З.К. Шанина, О.В. Разина
doaj   +1 more source

Minkowski functionals for composite smooth random fields

Physical Review D
9 pages, 5 figures, references added, minor typographic errors ...
Pravabati Chingangbam, Fazlu Rahman
openaire   +2 more sources

Investigation of the Bell-CHSH inequality in diamond regions

European Physical Journal C: Particles and Fields
A numerical setup for the Bell-CHSH inequality for causal diamonds in $$1+1$$ 1 + 1 Minkowski spacetime is presented. Upon choosing a suitable set of test functions supported in the diamonds, sensible violations are reported for the correlation function ...
M. S. Guimaraes, I. Roditi, S. P. Sorella   +2 more
doaj   +1 more source

On the functional Minkowski problem

To every log-concave function $f$ one may associate a pair of measures $(μ_{f},ν_{f})$ which are the surface area measures of $f$. These are a functional extension of the classical surface area measure of a convex body, and measure how the integral $\int f$ changes under perturbations.
Falah, Tomer, Rotem, Liran
openaire   +2 more sources

Asymptotic symmetries and Weinberg’s soft photon theorem in Mink d+2

Journal of High Energy Physics, 2019
We show that Weinberg’s leading soft photon theorem in massless abelian gauge theories implies the existence of an infinite-dimensional large gauge symmetry which acts non-trivially on the null boundaries ± of (d + 2)-dimensional Minkowski spacetime ...
Temple He, Prahar Mitra
doaj   +1 more source

PHYSICAL PROPERTIES OF A CLASS OF SPHERICALLY SYMMETRIC PERFECT FLUID DISTRIBUTIONS IN NONCOMOVING COORDINATES

Odessa Astronomical Publications, 2017
The physical properties of an exact solution of Einstein's field equations are examined. This spherically symmetric perfect fluid solution contains expansion, acceleration and shear. There exist models with regions of spacetime where the pressure and the
H. Knutsen
doaj   +1 more source

An extension of Minkowski's singular function

Applied Mathematics Letters, 1995
The authors introduce a family of continuous strictly increasing singular (Cantor type) functions \(g_\lambda :[0,1]\rightarrow [0,1]\), \(\lambda \in (0,1)\). The Hausdorff dimension of the set of points where \(g_\lambda \) has a nonvanishing derivative is computed.
Tichy, R.F., Uitz, J.
openaire   +2 more sources

Exploring the possibility of testing the no-hair theorem with Minkowski-deformed regular hairy black holes via photon rings

European Physical Journal C: Particles and Fields
In this paper, we investigate the optical appearance of a regular static spherically symmetric hairy black hole within the context of Minkowski deformation governed by the parameter $$\alpha $$ α .
Xilong Yang, Meirong Tang, Zhaoyi Xu
doaj   +1 more source

Cosmological solutions of a nonlocal square root gravity

Physics Letters B, 2019
In this paper we consider modification of general relativity extending R−2Λ by nonlocal term of the form R−2ΛF(□)R−2Λ, where F(□) is an analytic function of the d'Alembert operator □.
I. Dimitrijevic, B. Dragovich, A.S. Koshelev, Z. Rakic, J. Stankovic   +4 more
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The Continuity and Convexity of a Nonlinear Scalarization Function with Applications in Set Optimization Problems Involving a Partial Order Relation

Mathematics
In this paper, we deal with the properties and applications of a nonlinear scalarization function for sets by using the Minkowski difference. Under some suitable assumptions, the continuity and convexity concerned with the nonlinear scalarization ...
Zi-Ru Zhang, Yang-Dong Xu
doaj   +1 more source