Results 111 to 120 of about 86,270 (268)
AIP Advances, 2012 One of the most successful methods for calculating reduced density operator dynamics in open quantum systems, that can give numerically exact results, uses Feynman integrals. However, when simulating the dynamics for a given amount of time, the number of
Nikesh S. Dattani
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Integral representation of the scalar propagators on the de Sitter expanding universe
European Physical Journal C: Particles and Fields, 2019 A new type of integral representation is proposed for the propagators of the massive Klein–Gordon field minimally coupled to gravity of the de Sitter expanding universe.
Ion I. Cotăescu, Ion Cotăescu
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FEYNMAN PATH-INTEGRAL APPROACH TO THE QED3 THEORY OF THE PSEUDOGAP [PDF]
, 2003 DANIEL E. SHEEHY
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Effective Quantum Field Theory Methods for Calculating Feynman Integrals [PDF]
, 2023 A. V. Kotikov
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Surface Adhesion Engineering for Armored Metasurfaces and Beyond
Advanced Science, Volume 13, Issue 1, 5 January 2026.Targeting primary causes of dysfunctionality in optical systems, an “armored” metasurface is developed based on Persson's model and Hertzian theory, enabling anti‐dust, anti‐scratch, anti‐impact, and anti‐water, heat resistance capabilities, alongside excellent optical antireflection performance.
Lianwei Chen +10 more
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Annalen der Physik, Volume 538, Issue 1, January 2026.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
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Renormalization and running in the 2D CP (1) model
Journal of High Energy PhysicsWe calculate the scattering amplitude in the two dimensional CP (1) model in a regularization scheme independent way. When using cutoff regularization, a new Feynman rule from the path integral measure is required if one is to preserve the symmetry.
Diego Buccio +3 more
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Asymptotic Estimates of Feynman Integrals [PDF]
Journal of Mathematical Physics, 1968 In this paper, we consider the problem of determining logarithmic, as well as polynomial, asymptotic estimates for certain convergent integrals containing parameters. We state and prove an asymptotic theorem which gives the logarithmic asymptotic behavior of a convergent integral where any subset of the parameters becomes large while the remaining ...
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On the Noisy Road to Open Quantum Dynamics: The Place of Stochastic Hamiltonians
Annalen der Physik, Volume 538, Issue 1, January 2026.Stochastic Hamiltonian formulations of open quantum dynamics are revisited, highlighting their roots in stochastic calculus. The connections among stochastic Hamiltonians, stochastic Schrödinger equations, and master‐equation approaches are made explicit.
Pietro De Checchi +3 more
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Annals of Mathematics and Artificial Intelligence / Hypergeometric structures in Feynman integrals [PDF]
, 2023 J. Blümlein +2 more
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