Results 31 to 40 of about 169,859 (280)
Non-perturbative double scaling limits [PDF]
, 2002 Recently, the author has proposed a generalization of the matrix and vector models approach to the theory of random surfaces and polymers. The idea is to replace the simple matrix or vector (path) integrals by gauge theory or non-linear sigma model (path)
Ferrari F., FRANK FERRARI, Neumann C.
core +3 more sources
EPJ Web of Conferences, 2017 The probabilities of molecular quantum transitions induced by electromagnetic field are expressed as path integrals of a real alternating functional. We propose a new method for computing these integrals by means of recurrence relations.
Biryukov Alexander, Degtyareva Yana
doaj +1 more source
Simplified path integral for supersymmetric quantum mechanics and type-A trace anomalies
Journal of High Energy Physics, 2018 Particles in a curved space are classically described by a nonlinear sigma model action that can be quantized through path integrals. The latter require a precise regularization to deal with the derivative interactions arising from the nonlinear kinetic ...
Fiorenzo Bastianelli +2 more
doaj +1 more source
Path Integrals in Lattice Quantum Chromodynamics
, 2007 I discuss the use of path integrals to study strong-interaction physics from first principles. The underlying theory is cast into path integrals which are evaluated numerically using Monte Carlo methods on a space-time lattice.
Lee, Frank X.
core +1 more source
Building a path-integral calculus: a covariant discretization approach
, 2019 Path integrals are a central tool when it comes to describing quantum or thermal fluctuations of particles or fields. Their success dates back to Feynman who showed how to use them within the framework of quantum mechanics.
Cugliandolo, Leticia F. +2 more
core +2 more sources
Coordinate Independence of of Quantum-Mechanical Path Integrals
, 2000 We develop simple rules for performing integrals over products of distributions in coordinate space. Such products occur in perturbation expansions of path integrals in curvilinear coordinates, where the interactions contain terms of the form dot q^2 q^n,
't Hooft +3 more
core +1 more source
Path Integrals for Parastatistics
, 2004 We demonstrate that parastatistics can be quantized using path integrals by calculating the generating functionals for time-ordered products of both free and interacting parabose and parafermi fields in terms of path integrals.
A. K. Mishra +10 more
core +4 more sources
Feynman-Schwinger Representation method for bound states [PDF]
, 2000 In nuclear and particle physics one is often faced with problems where perturbation theory is not applicable. An example of this is the description of bound states.
Savkli, Cetin
core +3 more sources
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source
Feynman path integrals for discrete-variable systems: Walks on Hamiltonian graphs
Physical Review ResearchWe propose a natural, parameter-free, discrete-variable formulation of Feynman path integrals. We show that for discrete-variable quantum systems, Feynman path integrals take the form of walks on the graph whose weighted adjacency matrix is the ...
Amir Kalev, Itay Hen
doaj +1 more source