Results 41 to 50 of about 44,639 (273)
Regularized Stress Tensor of Vector Fields in de Sitter Space
UniverseWe study the Stueckelberg field in de Sitter space, which is a massive vector field with the gauge fixing (GF) term 12ζ(Aμ;μ)2. We obtain the vacuum stress tensor, which consists of the transverse, longitudinal, temporal, and GF parts, and each contains ...
Yang Zhang, Xuan Ye
doaj +1 more source
Journal of High Energy Physics, 2018 In this paper, using the light-cone lattice regularization, we compute the finite volume expectation values of the composite operator Ψ ¯ Ψ $$ \overline{\varPsi}\varPsi $$ between pure fermion states in the Massive Thirring Model.
Árpád Hegedűs
doaj +1 more source
Cancellation of quantum mechanical higher loop contributions to the gravitational chiral anomaly
, 1995 We give an explicit demonstration, using the rigorous Feynman rules developed in~$\0^{1}$, that the regularized trace $\tr \gamma_5 e^{-\beta \Dslash^2}$ for the gravitational chiral anomaly expressed as an appropriate quantum mechanical path integral is
Andrew K. Waldron +10 more
core +2 more sources
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Stable Approximations of a Minimal Surface Problem with Variational Inequalities
Abstract and Applied Analysis, 1997 In this paper we develop a new approach for the stable approximation of a minimal surface problem associated with a relaxed Dirichlet problem in the space BV(Ω) of functions of bounded variation.
M. Zuhair Nashed, Otmar Scherzer
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Notes on spinning operators in fermionic CFT
Journal of High Energy Physics, 2017 The Gross-Neveu model defines a unitary CFT of interacting fermions in 2 < d < 4 which has perturbative descriptions in the 1/N expansion and in the epsilon-expansion near two and four dimensions.
S. Giombi, V. Kirilin, E. Skvortsov
doaj +1 more source
Semiclassical form factor for chaotic systems with spin 1/2
, 1999 We study the properties of the two-point spectral form factor for classically chaotic systems with spin 1/2 in the semiclassical limit, with a suitable semiclassical trace formula as our principal tool.
Barut A O +20 more
core +3 more sources
A Scalable Perovskite Platform With Multi‐State Photoresponsivity for In‐Sensor Saliency Detection
Advanced Materials, EarlyView.A scalable in‐sensor computing platform (32 × 32 array) with ultra‐low variability is developed by incorporating ferroelectric copolymers into halide perovskite thin films. These devices achieve 1000 programmable photoresponsivity states and high thermal reliability.
Xuechao Xing +10 more
wiley +1 more source
Estimating the inverse trace using random forests on graphs [PDF]
, 2019 Some data analysis problems require the computation of (regularised) inverse traces, i.e. quantities of the form $\Tr (q \bI + \bL)^{-1}$. For large matrices, direct methods are unfeasible and one must resort to approximations, for example using a ...
Amblard, Pierre-Olivier +4 more
core +1 more source
Direct sums of trace maps and self-adjoint extensions
, 2014 We give a simple criterion so that a countable infinite direct sum of trace (evaluation) maps is a trace map. An application to the theory of self-adjoint extensions of direct sums of symmetric operators is provided; this gives an alternative approach to
Posilicano, Andrea
core +1 more source