On the anomalous mass defect of strange stars in the Field Correlator Method

Abstract

We investigate general aspects of the mass defects of strange stars in the context of the Field Correlator Method, without magnetic field. The main parameters of the model that enter the corresponding nonperturbative equation of state of the quark gluon plasma are the gluon condensate G 2 and the large distance static QQ potential V 1 .We calculate mass defects of stellar configurations in the central density range 11 < log ρ c < 18. In general, the mass defects are strongly dependent on the model parameters. For a large range of values of G 2 and V 1 , we obtain anomalous mass defects with magnitudes around 10 53 erg , of the same order of the observed energies of gamma-ray bursts and neutrino emissions in SN1987A, and of the theoretically predicted energies of the quark-novae explosions.

Low mass strange stars and the compact star 1E1207.4-5209 in the Field Correlator Method

“…4 in Ref. [16]). Dotted lines: ∆ 2 M at the point 3 of the low stellar masses ranging from M/M ⊙ ≃ 0.…”

“…Let us summarize the main equations concerning the FCM thermodynamics of quarks (see Refs. [16,18,19] for a more detailed description). The main parameters of the nonperturbative equation of state are the large distance static q q potential V 1 and the gluon condensate G 2 .…”

“…Each plot starts from the origin (∆ 2 M = 0) and ends at the maximum mass value of ∆ 2 M calculated in Ref. [16] where the point 3 is located also satisfying Eq. ( 17) .…”

“…We studied the general aspects of (normal and anomalous) mass defects of strange stars within the FCM approach in Ref. [16] . We carried out the calculation of the mass defects specially at the maximum masses of the stellar sequences.…”