We present results of the location of the closest singularities in the complex chemical potential plane using a novel method. These results are obtained with (2+1)-flavor of highly improved staggered quarks (HISQ) on lattices with temporal extent of Nτ = 4, 6. We show that the scaling is consistent with the expected scaling of the Lee-Yang edge singularities in the vicinity of the Roberge-Weiss (RW) transition. We determine various non-universal parameters using 3D Ising model scaling functions that map QCD in the scaling region of the RW transition. Furthermore, as a preliminary result we discuss how the Lee-Yang edge singularity can be used to probe the chiral phase transition in QCD. The singularity obtained close to the chiral phase transition temperature Tc seems to be in agreement with the expected scaling of the Lee-Yang edge singularity. As an outlook, we discuss the scaling of the Lee-Yang edge singularity in the vicinity of a possible critical end point in QCD, at even lower temperatures. In the future, such a scaling analysis might hint on the existence and the location of the critical end point. The work presented here is a part of an ongoing project of Bielefeld Parma joint collaboration.

Lee-Yang edge singularities in 2+1 flavor QCD with imaginary chemical potential / Singh, S.; Dimopoulos, P.; Dini, L.; Di Renzo, F.; Goswami, J.; Nicotra, G.; Schmidt, C.; Zambello, K.; Ziesche, F.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 396:(2022), pp. 260.260.1-260.260.8. (Intervento presentato al convegno 38th International Symposium on Lattice Field Theory, LATTICE 2021 tenutosi a Massachusetts Institute of Technology (MIT), usa nel 26-30 July, 2021) [10.22323/1.396.0260].

Lee-Yang edge singularities in 2+1 flavor QCD with imaginary chemical potential

Dimopoulos, P.;Di Renzo, F.;Zambello, K.;
2022-01-01

Abstract

We present results of the location of the closest singularities in the complex chemical potential plane using a novel method. These results are obtained with (2+1)-flavor of highly improved staggered quarks (HISQ) on lattices with temporal extent of Nτ = 4, 6. We show that the scaling is consistent with the expected scaling of the Lee-Yang edge singularities in the vicinity of the Roberge-Weiss (RW) transition. We determine various non-universal parameters using 3D Ising model scaling functions that map QCD in the scaling region of the RW transition. Furthermore, as a preliminary result we discuss how the Lee-Yang edge singularity can be used to probe the chiral phase transition in QCD. The singularity obtained close to the chiral phase transition temperature Tc seems to be in agreement with the expected scaling of the Lee-Yang edge singularity. As an outlook, we discuss the scaling of the Lee-Yang edge singularity in the vicinity of a possible critical end point in QCD, at even lower temperatures. In the future, such a scaling analysis might hint on the existence and the location of the critical end point. The work presented here is a part of an ongoing project of Bielefeld Parma joint collaboration.
2022
Lee-Yang edge singularities in 2+1 flavor QCD with imaginary chemical potential / Singh, S.; Dimopoulos, P.; Dini, L.; Di Renzo, F.; Goswami, J.; Nicotra, G.; Schmidt, C.; Zambello, K.; Ziesche, F.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 396:(2022), pp. 260.260.1-260.260.8. (Intervento presentato al convegno 38th International Symposium on Lattice Field Theory, LATTICE 2021 tenutosi a Massachusetts Institute of Technology (MIT), usa nel 26-30 July, 2021) [10.22323/1.396.0260].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2929653
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