Results 11 to 20 of about 395,539 (297)
Optimisation of Thimble simulations and quantum dynamics of multiple fields in real time
Journal of High Energy Physics, 2022 We apply the Generalised Thimble approach to the computation of exact path integrals and correlators in real-time quantum field theory. We first investigate the details of the numerical implementation and ways of optimizing the algorithm. We subsequently
Simon Woodward +3 more
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A solution to the 4-tachyon off-shell amplitude in cubic string field theory [PDF]
, 2006 We derive an analytic series solution of the elliptic equations providing the 4-tachyon off-shell amplitude in cubic string field theory (CSFT). From such a solution we compute the exact coefficient of the quartic effective action relevant for time ...
A. Fotopoulos +37 more
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Exact Computations in Topological Abelian Chern-Simons and BF Theories
Advances in High Energy Physics, 2017 We introduce Deligne cohomology that classifies U1 fibre bundles over 3 manifolds endowed with connections. We show how the structure of Deligne cohomology classes provides a way to perform exact (nonperturbative) computations in U1 Chern-Simons theory ...
Philippe Mathieu
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Exact One-Loop Thermal Free Energies of Solitons [PDF]
, 2001 I show how to compute the exact one-loop thermal correction to the free energy of a soliton. The method uses the effective potential as an auxiliary step to ensure that the soliton is quantized around the appropriate vacuum.
Graham, N.
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Adjoint-based exact Hessian computation [PDF]
BIT Numerical Mathematics, 2021 AbstractWe consider a scalar function depending on a numerical solution of an initial value problem, and its second-derivative (Hessian) matrix for the initial value. The need to extract the information of the Hessian or to solve a linear system having the Hessian as a coefficient matrix arises in many research fields such as optimization, Bayesian ...
Shin-ichi Ito +2 more
openaire +3 more sources
Physical Review Research, 2022 The U(1) quantum link model on the triangular lattice has two rotation-symmetry-breaking nematic confined phases. Static external charges are connected by confining strings consisting of individual strands with fractionalized electric flux.
D. Banerjee +4 more
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A Convolve-And-MErge Approach for Exact Computations on High-Performance Reconfigurable Computers
International Journal of Reconfigurable Computing, 2012 This work presents an approach for accelerating arbitrary-precision arithmetic on high-performance reconfigurable computers (HPRCs). Although faster and smaller, fixed-precision arithmetic has inherent rounding and overflow problems that can cause errors
Esam El-Araby +3 more
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Complexity, 2019 We aim to construct exact and explicit solutions to a generalized Bogoyavlensky-Konopelchenko equation through the Maple computer algebra system. The considered nonlinear equation is transformed into a Hirota bilinear form, and symbolic computations are ...
Shou-Ting Chen, Wen-Xiu Ma
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Computer Assisted Methods in Engineering and Science, 2023 Solving systems of algebraic equations is presented using the Gröbner Basis Package of the computer algebra system MAPLE V. The Grobner basis computations allow exact conclusions on the solutions of sets of polynomial equations, such as to decide if the
György Popper
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Results in Physics, 2020 We describe two new discrete symmetries of the inviscid Burgers (or Riemann–Hopf) equation ut+uux=0. We derived both of them using a local, formal approach of Hopf algebraic renormalization, a tool recently used in algorithmic computations. We prove that
G. Barad, E. Czeizler, A. Paun
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