Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Gökçe Başar"'
Autor:
Gökçe Başar, Joseph Marincel
Publikováno v:
Physical Review
We study one-dimensional QCD at finite quark density by using the sign optimization framework. The fermion sign problem is mitigated by deforming the path integral domain, $SU(3)$ to a complexified one ${\cal M} \subset SL(3)$, explicitly constructed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e645540d54bb7e9d2fce558b492cfcc0
http://arxiv.org/abs/2208.02072
http://arxiv.org/abs/2208.02072
Publikováno v:
Physical Review
Motivated by the search for the QCD critical point, we discuss how to obtain the singular behavior of a thermodynamic system near a critical point, namely the Lee-Yang singularities, from a limited amount of local data generated in a different region
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4a744681bb87d220c49dbb1148078d4
https://doi.org/10.1103/physrevd.105.105002
https://doi.org/10.1103/physrevd.105.105002
Autor:
Gökçe Başar
Publikováno v:
Physical Review Letters
We introduce a new way of reconstructing the equation of state of a thermodynamic system near a second order critical point from a finite set of Taylor coefficients computed away from the critical point. We focus on the Ising universality class (${\m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61fb0d77e0627c22dbd2dc342ea06b27
http://arxiv.org/abs/2105.08080
http://arxiv.org/abs/2105.08080
Publikováno v:
Physical Review Letters
In the context of the search for the QCD critical point using non-Gaussian fluctuations, we obtain the evolution equations for non-Gaussian cumulants to the leading order of the systematic expansion in the magnitude of thermal fluctuations. We develo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef6a7eedc9ddb1b2f941d513437e4cb6
Publikováno v:
Physical Review
To describe dynamics of bulk and fluctuations near the QCD critical point we develop general relativistic fluctuation formalism for a fluid carrying baryon charge. Feedback of fluctuations modifies hydrodynamic coefficients including bulk viscosity a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::778649679d865ff0ab5d6ecffcb40b23
https://doi.org/10.1103/physrevc.102.034901
https://doi.org/10.1103/physrevc.102.034901
Autor:
Gökçe Başar
Publikováno v:
Nuclear Physics A. 967:852-855
We discuss a novel solution for the sign problem which prevents first principle Monte-Carlo computations of QCD at finite chemical potential (especially important for both the search for the critical point and neutron star physics) as well as real ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0584953ceef2da993c83c1acc237de0
https://doi.org/10.1016/j.nuclphysa.2017.05.004
https://doi.org/10.1016/j.nuclphysa.2017.05.004
Publikováno v:
Physical Review
We present a general systematic formalism for describing dynamics of fluctuations in an arbitrary relativistic hydrodynamic flow, including their feedback (known as long-time hydrodynamic tails). The fluctuations are described by two-point equal-time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50608ecf0824098dffc6c77fd6a49109
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physical Review D. 98
One strategy for reducing the sign problem in finite-density field theories is to deform the path integral contour from real to complex fields. If the deformed manifold is the appropriate combination of Lefschetz thimbles---or somewhat close to them-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89c648506f0372b653f9f30e31e9f428
https://doi.org/10.1103/physrevd.98.034506
https://doi.org/10.1103/physrevd.98.034506
The computation of observables in general interacting theories, be them quantum mechanical, field, gauge or string theories, is a non-trivial problem which in many cases can only be addressed by resorting to perturbative methods. In most physically i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::890807f8ce5cac402145ef24794a5d45
http://arxiv.org/abs/1802.10441
http://arxiv.org/abs/1802.10441
Publikováno v:
Physical Review D. 96
Quantum field theories with complex actions cannot be investigated using importance sampling due to the sign problem. One possible solution is to use the holomorphic gradient flow, a method we introduced related to the Lefschetz thimbles idea. In man
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::174180a3c60f792c4e082fd3b8c66754
https://doi.org/10.1103/physrevd.96.034513
https://doi.org/10.1103/physrevd.96.034513