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[Fizinfo] [Rmkiusers] Wigner FK RMI Elméleti Osztály Szemináriuma

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  • From: somogyi <somogyi.gabor AT>
  • To: rmkiusers AT, fizinfo AT
  • Subject: [Fizinfo] [Rmkiusers] Wigner FK RMI Elméleti Osztály Szemináriuma
  • Date: Mon, 17 Oct 2022 10:44:43 +0200
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Wigner FK RMI Elméleti Osztály Szemináriuma
Tisztelettel meghívjuk

Kovács Péter
(Wigner FK)

"Fate of the QCD critical endpoint at large N_c"

címmel tartandó szemináriumára.


The phase diagram of QCD is investigated by varying number of colors N_c within a Polyakov loop quark-meson chiral model. The first part of the talk is dedicated to the introduction of the basics of the large N_c technique. In the second part our attention is focused on the critical point(s). It turns out that the critical point present for N_c = 3 moves toward the µ_q-axis and disappears as soon as the number of color is increased. Yet, a distinct critical point emerges along the temperature axis for N_c = 53 and moves toward finite density when increasing N_c further. Thus, the phase diagram at large N_c looks like the opposite to the Nc = 3 results, with the first order transition in the upper-left and crossover in the down-right regions of the (µ_q,T)-plane. The pressure is also evaluated in dependence of N_c, showing a scaling with N_c^0 in the confined and chirally broken phase and with N_c^2 in the deconfined one. Moreover, the presence of a chirally symmetric but confined ‘quarkyonic phase’ at large density and moderate temperature with a pressure proportional to N_c is confirmed.

Helye: Wigner FK RMI III. ép. Tanácsterem
Ideje: 2022 október 21 péntek d.u. 14 óra

Szívesen látunk minden érdeklődőt.

Somogyi Gábor

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