Properties of kaon at non-zero temperature and baryon chemical potential

Name: Properties of kaon at non-zero temperature and baryon chemical potential
Author: Bozkır, G., Türkan, Arzu, Azizi, K.

İsim	Properties of kaon at non-zero temperature and baryon chemical potential
Yazar	Bozkır, G., Türkan, Arzu, Azizi, K.
Basım Tarihi:	2023-10-14
Basım Yeri	- Springer
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1434-6001
Kayıt Numarası	49a50a4a-b542-4f44-b074-aba87605d463
Lokasyon	Natural and Mathematical Sciences
Tarih	2023-10-14
Notlar	Iran's National Elites Foundation
Örnek Metin	We investigate the spectroscopic properties of the strange particle kaon in the framework of hot and dense QCD. To this end, first, we find the perturbative spectral density, which is connected with both the temperature T and the baryon chemical potential μB . We include the non-perturbative operators as functions of temperature and baryon chemical potential up to mass dimension five. We perform the calculations in momentum space and use the quark propagator in the hot and dense medium. The numerical results at non-zero temperature and baryon chemical potential demonstrate that the mass of the particle rises considerably by increasing the baryon chemical potential at a fixed temperature (for both the zero and non-zero temperatures) up to approximately μB= 0.4 GeV. After this point, it starts to fall by increasing the baryon chemical potential and it apparently vanishes at μB= (1.03–1.15) GeV for finite temperatures: The point of apparent vanishing moves to lower baryon chemical potentials by increasing the temperature. At zero temperature, the mass reaches to roughly a fixed value at higher baryon chemical potentials. On the other hand, the decay constant decreases considerably with respect to baryon chemical potential up to roughly μB= 0.4 GeV, but after this point, it starts to increase in terms of the baryon chemical potential at finite temperatures. At T= 0 , the decay constant reaches to a fixed value at higher chemical potentials, as well. Regarding the dependence on the temperature we observe that, at fixed values of baryon chemical potentials, the mass and decay constant remain roughly unchanged up to T= 50 MeV and T= 70 MeV respectively, but after these points, the mass starts to fall and the decay constant starts to rise up to a critical temperature T= 155 MeV, considerably. It is also seen that the obtained results for the mass and decay constant at T= μB= 0 are in good consistency with the existing experimental data. The observations are consistent with the QCD phase diagram in the T- μB plane.
DOI	10.1140/epja/s10050-023-01187-1
Cilt	59

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Properties of kaon at non-zero temperature and baryon chemical potential

Yazar Bozkır, G., Türkan, Arzu, Azizi, K.

Basım Tarihi 2023-10-14

Basım Yeri - Springer

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1434-6001

Kayıt Numarası 49a50a4a-b542-4f44-b074-aba87605d463

Lokasyon Natural and Mathematical Sciences

Tarih 2023-10-14

Notlar Iran's National Elites Foundation

Örnek Metin We investigate the spectroscopic properties of the strange particle kaon in the framework of hot and dense QCD. To this end, first, we find the perturbative spectral density, which is connected with both the temperature T and the baryon chemical potential μB . We include the non-perturbative operators as functions of temperature and baryon chemical potential up to mass dimension five. We perform the calculations in momentum space and use the quark propagator in the hot and dense medium. The numerical results at non-zero temperature and baryon chemical potential demonstrate that the mass of the particle rises considerably by increasing the baryon chemical potential at a fixed temperature (for both the zero and non-zero temperatures) up to approximately μB= 0.4 GeV. After this point, it starts to fall by increasing the baryon chemical potential and it apparently vanishes at μB= (1.03–1.15) GeV for finite temperatures: The point of apparent vanishing moves to lower baryon chemical potentials by increasing the temperature. At zero temperature, the mass reaches to roughly a fixed value at higher baryon chemical potentials. On the other hand, the decay constant decreases considerably with respect to baryon chemical potential up to roughly μB= 0.4 GeV, but after this point, it starts to increase in terms of the baryon chemical potential at finite temperatures. At T= 0 , the decay constant reaches to a fixed value at higher chemical potentials, as well. Regarding the dependence on the temperature we observe that, at fixed values of baryon chemical potentials, the mass and decay constant remain roughly unchanged up to T= 50 MeV and T= 70 MeV respectively, but after these points, the mass starts to fall and the decay constant starts to rise up to a critical temperature T= 155 MeV, considerably. It is also seen that the obtained results for the mass and decay constant at T= μB= 0 are in good consistency with the existing experimental data. The observations are consistent with the QCD phase diagram in the T- μB plane.

DOI 10.1140/epja/s10050-023-01187-1

Cilt 59