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[Fizinfo] ELTE particle physics seminar - 2 May (fwd)

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  • From: Andras LASZLO <laszlo.andras AT>
  • To: fizinfo AT
  • Subject: [Fizinfo] ELTE particle physics seminar - 2 May (fwd)
  • Date: Fri, 28 Apr 2023 13:58:46 +0200 (CEST)
  • Authentication-results: (amavisd-new); dkim=pass (1024-bit key) reason="pass (just generated, assumed good)"

---------- Forwarded message ----------
Date: Fri, 28 Apr 2023 09:32:31 +0200 (CEST)
From: Daniel Nogradi <nogradi AT>
To: Daniel Nogradi <nogradi AT>
Subject: ELTE particle physics seminar - 2 May

Date/Time: 2 May, Tuesday, 14:15

Location: ELTE TTK, second floor, 2.54 Novobatzky room

Speaker: Tamas Gy Kovacs (Eotvos)

Title: Chiral symmetry, instantons and the Dirac spectrum in hot QCD


The spectrum of the QCD Dirac operator encodes important information about the
physical properties of strongly interacting systems. In particular, the lowest
part of the spectrum is strongly related to the spontaneously and anomalously
broken chiral symmetries and their possible restoration in the quark-gluon
plasma phase. In contrast to standard lore, above the transition temperature
spectral density at zero does not vanish, but it develops a pronounced peak
is presently extensively discussed in the literature because of its influence
chiral symmetry restoration. I will show that the spectral peak can be
understood based on a dilute gas of instantons and antiinstantons. Hopefully
this simple picture can be used to determine the behavior of the spectral peak
in the thermodynamic limit and the chiral limit, two limits that are extremely
hard to access directly by using lattice simulations.


If you no longer would like to receive seminar announcements please send an
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  • [Fizinfo] ELTE particle physics seminar - 2 May (fwd), Andras LASZLO, 04/28/2023

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