Results 1 to 10 of about 2,970,127 (311)

The QCD equation of state at finite density from analytical continuation [PDF]

open access: yesEPJ Web of Conferences, 2017
An effcient way to study the QCD phase diagram at small finite density is to extrapolate thermodynamical observables from imaginary chemical potential. In this talk we present results on several observables for the equation of state to order (μB/T)6. The
Günther Jana   +6 more
doaj   +7 more sources

Analytical continuation of two-dimensional wave fields. [PDF]

open access: yesProc Math Phys Eng Sci, 2021
Wave fields obeying the two-dimensional Helmholtz equation on branched surfaces (Sommerfeld surfaces) are studied. Such surfaces appear naturally as a result of applying the reflection method to diffraction problems with straight scatterers bearing ideal
Assier RC, Shanin AV.
europepmc   +3 more sources

Nevanlinna Analytical Continuation. [PDF]

open access: yesPhysical Review Letters, 2020
Simulations of finite temperature quantum systems provide imaginary frequency Green's functions that correspond one to one to experimentally measurable real-frequency spectral functions.
Jia Fei, Chia-Nan Yeh, E. Gull
semanticscholar   +5 more sources

Pseudoentropy sum rule by analytical continuation of the superposition parameter [PDF]

open access: yesJournal of High Energy Physics
In this paper, we establish a sum rule that connects the pseudoentropy and entanglement entropy of the superposition state. Through analytical continuation of the superposition parameter, we demonstrate that the transition matrix and density matrix of ...
Wu-zhong Guo, Yao-zong Jiang, Jin Xu
doaj   +2 more sources

The topographic bias in Stokes’ formula vs. the error of analytical continuation by an Earth Gravitational Model - are they the same?

open access: yesJournal of Geodetic Science, 2015
Geoid determination below the topographic surface in continental areas using analytical continuation of gravity anomaly and/or an external type of solid spherical harmonics determined by an Earth GravitationalModel (EGM) inevitably leads to a topographic
Sjöberg L. E.
doaj   +2 more sources

Analytical continuation of imaginary axis data using maximum entropy [PDF]

open access: yes, 2010
We study the maximum entropy (MaxEnt) approach for analytical continuation of spectral data from imaginary times to real frequencies. The total error is divided in a statistical error, due to the noise in the input data, and a systematic error, due to ...
Gunnarsson, O.   +2 more
core   +3 more sources

A comparison between methods of analytical continuation for bosonic functions [PDF]

open access: yes, 2016
In this article we perform a critical assessment of different known methods for the analytical continuation of bosonic functions, namely the maximum entropy method, the non-negative least-square method, the non-negative Tikhonov method, the Pad\'e ...
Di Marco, Igor   +4 more
core   +4 more sources

Analytic Continuation of Quantum Monte Carlo Data by Stochastic Analytical Inference [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2009
We present an algorithm for the analytic continuation of imaginary-time quantum Monte Carlo data which is strictly based on principles of Bayesian statistical inference.
A. Papoulis   +7 more
core   +2 more sources

Entanglement and analytical continuation: an intimate relation told by the Riemann zeta function

open access: yesNew Journal of Physics, 2013
We propose measurements on a quantum system to realize the Riemann zeta function ζ . A single system, that is classical interference, suffices to create the Dirichlet representation of ζ .
C Feiler, W P Schleich
doaj   +2 more sources

Tachyons in de Sitter space and analytical continuation from dS/CFT to AdS/CFT [PDF]

open access: yes, 2002
We discuss analytic continuation from d-dimensional Lorentzian de Sitter (dS$_d$) to d-dimensional Lorentzian anti-de Sitter (AdS$_{d}$) spacetime. We show that AdS$_{d}$, with opposite signature of the metric, can be obtained as analytic continuation of
Allen B.   +16 more
core   +4 more sources

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