Results 91 to 100 of about 36,776 (204)
How to define the moving frame of the Unruh-DeWitt detector on manifolds
Journal of High Energy PhysicsThe physical phenomena seen by an observer are defined for a local inertial system that is subjective to the observer. Such a coordinate system is called a “moving frame” because it changes from time to time.
Tomohiro Matsuda
doaj +1 more source
Numerical study of multiparticle scattering in λϕ 4 theory
Journal of High Energy Physics, 2018 We study numerically classical collisions of waves in λϕ 4 theory. These processes correspond to multiparticle scattering in the semiclassical regime.
S. V. Demidov, B. R. Farkhtdinov
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|Vub| determination and testing of lepton flavour universality in semileptonic Bc → D(∗) decays
Journal of High Energy Physics, 2020 In light of prospects for measurements of B c → D (∗) lv decays in the upcoming Upgrade II of the LHC, we show that by using calculated B c → D (∗) form factors a competitive extraction of the |V ub | CKM matrix element from the B c → Dμ v ¯ μ $$ {B}_c\
Domagoj Leljak, Blaženka Melić
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Nonperturbative effects in a scalar supersymmetric theory
Physics Letters B, 1983 Abstract We show that the Parisi-Sourlas argument of dimensionality reduction by two in certain supersymmetric theories holds nonperturbatively, and that topological instanton configurations are important in three dimensions.
openaire +1 more source
Advanced Functional Materials, Volume 36, Issue 4, 12 January 2026.This review describes the different surface engineering strategies for quantum dots that addresses the challenges associated with surface defects, highlighting their role in enhancing the performance of solar energy conversion technologies. Abstract Colloidal quantum dots (QDs) have garnered significant attention for their unique potential in clean ...
Kokilavani S., Gurpreet Singh Selopal
wiley +1 more source
Revisiting Coleman-de Luccia transitions in the AdS regime using holography
Journal of High Energy Physics, 2021 Coleman-de Luccia processes for AdS to AdS decays in Einstein-scalar theories are studied. Such tunnelling processes are interpreted as vev-driven holographic RG flows of a quantum field theory on de Sitter space-time.
Jewel K. Ghosh +3 more
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Advanced Science, Volume 13, Issue 2, 9 January 2026.A self‐consistent ab initio many‐body perturbation theory combined with locally exact dynamical mean field theory is employed to compute the sub‐bandgap electronic transitions in van der Waals antiferromagnets. The rich interplay between the magnetic ordering and spin‐entangled optical transitions, manifested as photoluminescence and absorption ...
Dipankar Jana +7 more
wiley +1 more source
A Variational Approach to Bound States in Quantum Field Theory
, 1993 We consider here in a toy model an approach to bound state problem in a nonperturbative manner using equal time algebra for the interacting field operators.
A. Mishra +15 more
core +2 more sources
Nonperturbative effects and nonperturbative definitions in matrix models and topological strings
Journal of High Energy Physics, 2008 We develop techniques to compute multi-instanton corrections to the 1/N expansion in matrix models described by orthogonal polynomials. These techniques are based on finding trans-series solutions, i.e. formal solutions with exponentially small corrections, to the recursion relations characterizing the free energy.
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DVCS via color dipoles: Nonperturbative effects
, 2008 We study the DVCS amplitude within the color dipole approach. The light-cone wave function of a real photon is evaluated in the instanton vacuum model. Our parameter free calculations are able to describe H1 data, both the absolute values and the $t$-dependences, at medium-high values of $Q^{2}$.
Kopeliovich, B. Z. +2 more
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