http://192.168.1.40:8080/xmlui/handle/123456789/1068 Fri, 04 Sep 2026 04:59:24 GMT 2026-09-04T04:59:24Z http://192.168.1.40:80/xmlui/bitstream/id/0e02ff44-fde1-438b-8e6e-24f1d389de3d/sukalpa.jpg http://192.168.1.40:8080/xmlui/handle/123456789/1068 http://192.168.1.40:8080/xmlui/handle/123456789/1091 Quark Nuggets as Baryonic Dark Matter Alam, Jan-e; Raha, Sibaji; Sinha, Bikash The cosmic first-order phase transition from quarks to hadrons, occurring a few microseconds after the big bang, would lead to the formation of quark nuggets which would be stable on a cosmological timescale if the associated baryon number was larger than a critical value. We examine the possibility that these surviving quark nuggets may not only be viable candidates for cold dark matter but could even close the universe. doi:10.1086/306905 Wed, 10 Mar 1999 00:00:00 GMT http://192.168.1.40:8080/xmlui/handle/123456789/1091 1999-03-10T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/1090 ρ-mass modification in 3He: Signal of restoration of chiral symmetry or test for nuclear matter models? Bhattacharyya, Abhijit; Ghosh, Sanjay Kumar; Raha, Sibaji Two recent experiments have demonstrated that the effective ρ-mass in nuclear medium, as extracted from the 3He(γ,π+π-) reaction, is substantially reduced. This has been advocated as an indication of partial restoration of chiral symmetry in nuclear matter. We show that even in the absence of chiral symmetry, effective mean field nuclear matter models can explain these findings quantitatively. DOI: 10.1103/PhysRevC.60.018202 Wed, 16 Jun 1999 00:00:00 GMT http://192.168.1.40:8080/xmlui/handle/123456789/1090 1999-06-16T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/1089 The Chandrasekhar limit for quark stars Banerjee, Shibaji; Ghosh, Sanjay Kumar; Raha, Sibaji The Chandrasekhar limit for quark stars is evaluated from simple energy balance relations, as proposed by Landau for white dwarfs or neutron stars. It has been found that the limit for quark stars depends on, in addition to the fundamental constants, the bag constant. doi:10.1088/0954-3899/26/1/101 Sat, 01 Jan 2000 00:00:00 GMT http://192.168.1.40:8080/xmlui/handle/123456789/1089 2000-01-01T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/1085 Relics of the cosmological QCD phase transition Bhattacharyya, Abhijit; Alam, Jan-e; Sarkar, Sourav; Roy, Pradip; Sinha, Bikash; Raha, Sibaji; Bhattacharjee, Pijushpani The abundance and size distribution of quark nuggets (QN’s), formed a few microseconds after the big bang due to a first-order QCD phase transition in the early universe, has been estimated. It appears that stable QN’s could be a viable candidate for cosmological dark matter. The evolution of baryon inhomogeneity due to evaporated (unstable) QN’s is also examined. DOI: 10.1103/PhysRevD.61.083509 Thu, 16 Mar 2000 00:00:00 GMT http://192.168.1.40:8080/xmlui/handle/123456789/1085 2000-03-16T00:00:00Z