Results 61 to 70 of about 32,626 (182)

Symplectic quantization: A new deterministic approach to the dynamics of quantum fields inspired by statistical mechanics* [PDF]

open access: yesEPJ Web of Conferences
In this contribution we summarize the main features of a new algorithm (already presented in [1]) to sample numerically on the lattice the quantum fluctuations of fields by means of a deterministic pseudo-Hamiltonian dynamics in an enlarge space of ...
Giachello Martina, Gradenigo Giacomo
doaj   +1 more source

What is the trouble with Dyson--Schwinger equations?

open access: yes, 2004
We discuss similarities and differences between Green Functions in Quantum Field Theory and polylogarithms. Both can be obtained as solutions of fixpoint equations which originate from an underlying Hopf algebra structure.
Bergbauer   +11 more
core   +1 more source

GENERALIZED ANALYTIC FOURIER-FEYNMAN TRANSFORMS AND CONVOLUTIONS ON A FRESNEL TYPE CLASS [PDF]

open access: yesBulletin of the Korean Mathematical Society, 2011
In this paper, we dene an Lp analytic generalized Fourier- Feynman transform and a convolution product of functionals in a Ba- nach algebra F ( Ca;b(0 ;T )) which is called the Fresnel type class, and in more general class FA1;A2 of functionals dened on general function space Ca;b(0 ;T ) rather than on classical Wiener space.
Seung-Jun Chang, Il-Yong Lee
openaire   +1 more source

A Personal Perspective on Metalloprotein Structure and the Future of Macromolecular X‐Ray Crystallography

open access: yesJournal of the Chinese Chemical Society, EarlyView.
While X‐ray crystallography has been the primary method for determining the structures of metalloproteins, cryoEM has taken over this role, illustrated by [4Fe4S]‐cluster containing proteins deposited in the Protein Data Bank. What will be the role for X‐ray crystallography as cryoEM and machine learning methods dominate the initial structural analysis?
Douglas C. Rees
wiley   +1 more source

Fast Fourier Transform Based Power Option Pricing with Stochastic Interest Rate, Volatility, and Jump Intensity

open access: yesJournal of Applied Mathematics, 2013
Firstly, we present a more general and realistic double-exponential jump model with stochastic volatility, interest rate, and jump intensity. Using Feynman-Kac formula, we obtain a partial integrodifferential equation (PIDE), with respect to the moment ...
Jiexiang Huang, Wenli Zhu, Xinfeng Ruan
doaj   +1 more source

Analyticity and crossing symmetry of superstring loop amplitudes

open access: yesJournal of High Energy Physics, 2019
Bros, Epstein and Glaser proved crossing symmetry of the S-matrix of a theory without massless fields by using certain analyticity properties of the off-shell momentum space Green’s function in the complex momentum plane.
Corinne de Lacroix   +2 more
doaj   +1 more source

3d Quantum Gravity and Effective Non-Commutative Quantum Field Theory

open access: yes, 2005
We show that the effective dynamics of matter fields coupled to 3d quantum gravity is described after integration over the gravitational degrees of freedom by a braided non-commutative quantum field theory symmetric under a kappa-deformation of the ...
Etera R. Livine   +3 more
core   +2 more sources

Classical microscopic theory of dispersion, emission and absorption of light in dielectrics [PDF]

open access: yes, 2014
This paper is a continuation of a recent one in which, apparently for the first time, the existence of polaritons in ionic crystals was proven in a microscopic electrodynamic theory.
Carati, Andrea, Galgani, Luigi
core   +4 more sources

Generalized Fourier-Feynman Transforms, Convolution Products, and First Variations on Function Space

open access: yesRocky Mountain Journal of Mathematics, 2010
Let \(Y\) be a generalized Brownian motion process, i.e.\ a Gaussian process with an absolutely continuous mean function \(a(t)\), \(t\in [0,T]\), with \(a(0)=0\), \(a'\in L^2[0,T]\), and covariance function \(r(s,t)=\min\{b(s),b(t)\}\), \(s,t\in [0,T]\) where \(b\) is a strictly increasing \(C^1\)-function with \(b(0)=0\).
Chang, Seung Jun   +2 more
openaire   +3 more sources

Reprogrammable All‐Photonic Molecular Logic With Ln3+ Luminescent Hybrids in Solid State

open access: yesLaser &Photonics Reviews, EarlyView.
Mario P. de‐Saralegui et al. report an Eu3⁺/Tb3⁺‐doped organic–inorganic hybrid material that enables multiple reprogrammable logic operations using only physical stimuli. Additionally, this solid‐state, all‐photonic platform represents the first example in the literature performing reversible Feynman logic operations, marking a major step toward ...
Mario P. de‐Saralegui   +4 more
wiley   +1 more source

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