http://192.168.1.40:8080/xmlui/handle/123456789/1086 2026-05-31T12:08:14Z http://192.168.1.40:8080/xmlui/handle/123456789/2300 Cosmological dark energy from the cosmic QCD phase transition and colour entanglement Banerjee, S.; Bhattacharyya, A.; Ghosh, Sanjay Kumar; Ilgenfritz, E. M.; Raha, Sibaji; Sinha, B.; Takasugi, E.; Toki, H. Recent astrophysical observations indicate that the universe is composed of a large amount of dark energy (DE) responsible for an accelerated expansion of the universe, along with a sizeable amount of cold dark matter (CDM), responsible for structure formation. At present, the explanations for the origin or the nature of both CDM and DE seem to require ideas beyond the standard model of elementary particle interactions. Here, for the first time, we show that CDM and DE can arise entirely from the standard principles of strong interaction physics and quantum entanglement. Quantitative agreement with the present data obtains without the need for any adjustable parameters. DOI: 10.1016/j.physletb.2005.02.008 2005-03-31T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/2299 Rotating twin stars and signature of quark-hadron phase transition Bhattacharyya, A.; Ghosh, Sanjay Kumar; Hanauske, M.; Raha, Sibaji The quark-hadron phase transition in a rotating compact star has been studied. The NLZ (nonlinear consistent zero point energy) model has been used for the hadronic sector and the MIT bag model has been used for the quark sector. It has been found that rotating twin star (third family) solutions are obtained up to Omega approximate to 4000 s(-1). Stars that are rotating faster than this limit do not show twin star solution. A backbending in the moment of inertia is also observed in the supermassive rest mass sequences. The braking index is found to diverge for a star having a larger region of mixed phase. DOI: 10.1103/PhysRevC.71.048801 2005-04-01T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/2298 Role of in-medium hadrons in photon-nucleus reactions: Shadowing and dilepton spectrum Alam, J. E.; Ghosh, Sanjay Kumar; Roy, P.; Sarkar, S. We study the effect of in-medium hadronic properties in photon-nucleus interactions in the context of shadowing as well as the dilepton spectrum for incident photon energies in the range 1.1-3 GeV. A reasonable agreement with the experimental data for shadowing is obtained in a scenario of downward spectral shift of the hadrons. We show that distinguishable features for in-medium changes of the hadronic properties can be observed experimentally through the dilepton spectrum by judicious choice of target nuclei and incident energy of photons. DOI: 10.1088/0954-3899/30/12/015 2004-12-01T00:00:00Z http://192.168.1.40:8080/xmlui/handle/123456789/2287 Radiation from mini bang Ghosh, Sanjay Kumar [No abstract available] 2005-11-10T00:00:00Z