Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Gursoy, Umut"'
Autor:
Gursoy, Umut, Planas, Guim Planella
We take a step toward a "microscopic" derivation of gauge-string duality. In particular, using mathematical techniques of Strebel differentials and discrete exterior calculus, we obtain a bosonic string worldsheet action for a string embedded in d+1
Externí odkaz:
http://arxiv.org/abs/2311.10142
We generalize Gopakumar's microscopic derivation of Witten diagrams in large N free quantum field theory [1] to interacting theories in perturbative expansion. For simplicity we consider a matrix scalar field with $\Phi^h$ interaction in d dimensions
Externí odkaz:
http://arxiv.org/abs/2211.16514
Fluctuations around critical behavior of a holographic charged plasmas are investigated by studying quasi-normal modes of the corresponding black branes in 5D Einstein-Maxwell-Dilaton gravity. The near horizon geometry of black branes approaches the
Externí odkaz:
http://arxiv.org/abs/2112.04296
Autor:
Gursoy, Umut
We review the holographic approach to electromagnetic phenomena in large N QCD. After a brief discussion of existing holographic models, we concentrate on the improved holographic QCD model extended to include magnetically induced phenomena. We explo
Externí odkaz:
http://arxiv.org/abs/2104.02839
Publikováno v:
SciPost Phys. 11, 041 (2021)
We study relativistic hydrodynamics in the presence of a non vanishing spin chemical potential. Using a variety of techniques we carry out an exhaustive analysis, and identify the constitutive relations for the stress tensor and spin current in such
Externí odkaz:
http://arxiv.org/abs/2101.04759
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Bifurcation analysis is used to study an effective model of QCD$_4$ with four-fermi interactions. Our analysis supports the scenario of a fixed point merger at the lower edge of the conformal window. This indicates square root scaling of the anomalou
Externí odkaz:
http://arxiv.org/abs/1812.05179
Publikováno v:
JHEP 1904 (2019) 071
We investigate the effects of anisotropy on the chiral condensate in a holographic model of QCD with a fully backreacted quark sector at vanishing chemical potential. The high temperature deconfined phase is a neutral and anisotropic plasma showing d
Externí odkaz:
http://arxiv.org/abs/1811.11724
Publikováno v:
Phys. Rev. Lett. 120, 242002 (2018)
We investigate the phase diagram of QCD-like gauge theories at strong coupling at finite magnetic field $B$, temperature $T$ and baryon chemical potential $\mu$ using the improved holographic QCD model including the full backreaction of the quarks in
Externí odkaz:
http://arxiv.org/abs/1707.00872
Autor:
Gursoy, Umut
We review construction of the improved holographic models for QCD-like confining gauge theories and their applications to the physics of the Quark-gluon plasma. We also review recent progress in this area of research. The lecture notes start from the
Externí odkaz:
http://arxiv.org/abs/1612.00899