Results 41 to 50 of about 105,688 (202)
Quantum inequalities in two dimensional curved spacetimes [PDF]
, 2002 We generalize a result of Vollick constraining the possible behaviors of the renormalized expected stress-energy tensor of a free massless scalar field in two dimensional spacetimes that are globally conformal to Minkowski spacetime.
A. Borde +32 more
core +2 more sources
Functional Brunn-Minkowski inequalities induced by polarity
Advances in Mathematics, 2020 We prove a new family of inequalities, which compare the integral of a geometric convolution of non-negative functions with the integrals of the original functions. For classical inf-convolution, this type of inequality is called the Pr kopa-Leindler inequality, which, restricted to indicators of convex bodies, gives the classical Brunn-Minkowski ...
Artstein-Avidan, S. +2 more
openaire +4 more sources
Quantum Theory of Massless Particles in Stationary Axially Symmetric Spacetimes
Entropy, 2021 Quantum equations for massless particles of any spin are considered in stationary uncharged axially symmetric spacetimes. It is demonstrated that up to a normalization function, the angular wave function does not depend on the metric and practically is ...
Amnon Moalem, Alexander Gersten
doaj +1 more source
Orthogonal polynomials for Minkowski’s question mark function [PDF]
Journal of Computational and Applied Mathematics, 2015 Hermann Minkowski introduced a function in 1904 which maps quadratic irrational numbers to rational numbers and this function is now known as Minkowski's question mark function since Minkowski used the notation $?(x)$. This function is a distribution function on $[0,1]$ which defines a singular continuous measure with support $[0,1]$.
Zoé Dresse, Walter Van Assche
openaire +3 more sources
Are non-vacuum states much relevant for retrieving shock wave memory of spacetime?
Physics Letters B, 2020 Shock wave gives back reaction to spacetime and the information is stored in the memory of background. Quantum memory effect of localised shock wave on Minkowski metric is investigated here.
Bibhas Ranjan Majhi
doaj +1 more source
An integer basis for celestial amplitudes
Journal of High Energy Physics, 2023 We present a discrete basis of solutions of the massless Klein-Gordon equation in 3 + 1 Minkowski space which transform as 𝔰𝔩(2, ℂ) Lorentz/conformal primaries and descendants, and whose elements all have integer conformal dimension.
Jordan Cotler +2 more
doaj +1 more source
Loop corrections in Minkowski spacetime away from equilibrium. Part II. Finite-time results
Journal of High Energy Physics, 2023 Loop corrections to finite-time correlation functions in quantum field theories away from equilibrium can be calculated using the in-in path integral approach.
Spasen Chaykov +3 more
doaj +1 more source
Boosted Schwarzschild Metrics from a Kerr-Schild Perspective
, 2018 The Kerr-Schild version of the Schwarzschild metric contains a Minkowski background which provides a definition of a boosted black hole. There are two Kerr-Schild versions corresponding to ingoing or outgoing principle null directions.
Mädler, Thomas, Winicour, Jeffrey
core +1 more source
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source
Work Versus Force: Simultaneous Processes for Describing Interactions
Advanced Physics Research, EarlyView.ABSTRACT Achieving a unified description of interactions remains an open challenge in theoretical physics, which currently describes four fundamental forces. This situation may be viewed differently when interactions are formulated in terms of processes (work as actio) rather than forces (force as actio), not only at the macroscopic level but also at ...
Grit Kalies +2 more
wiley +1 more source