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- Indian Institute of Technology GandhinagarIN282 papers
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- Indian Institute of AstrophysicsIN92 papers
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- Aryabhatta Research Institute of Observational SciencesIN66 papers
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47 papers · 1 filter
B-L Conserved Baryogenesis
Pei-Hong Gu, Utpal Sarkar
In the presence of anomaly induced sphaleron process, only a B-L asymmetry can be partially converted to the baryon asymmetry while any B+L asymmetry would be completely erased. Th…
Leptogenesis, Dark Energy, Dark Matter and the neutrinos
Utpal Sarkar
In this review we discuss how the models of neutrino masses can accommodate solutions to the problem of matter-antimatter asymmetry in the universe, dark energy or cosmological con…
Sinusoidal Excitations in Two Component Bose-Einstein Condensates
Priyam Das, T. Solomon Raju, Utpal Roy +1
The non-linear coupled Gross-Pitaevskii equation governing the dynamics of the two component Bose-Einstein condensate (TBEC) is shown to admit pure sinusoidal, propagating wave sol…
Radiative Neutrino Mass, Dark Matter and Leptogenesis
Pei-Hong Gu, Utpal Sarkar
We propose an extension of the standard model, in which neutrinos are Dirac particles and their tiny masses originate from a one-loop radiative diagram. The new fields required by…
Suzaku Observation of the Anomalous X-ray Pulsar CXOU J164710.2--455216
Sachindra Naik, Tadayasu Dotani, Nobuyuki Kawai +11
Suzaku TOO observation of the anomalous X-ray pulsar CXOU J164710.2-455216 was performed on 2006 September 23--24 for a net exposure of 38.8 ks. During the observation, the XIS was…
Core polarization in coupled-cluster theory induced by a parity and time-reversal violating interaction
K. V. P. Latha, Dilip Angom, Rajat K. Chaudhuri +2
The effects of parity and time reversal violating potential, in particular the tensor-pseudotensor electron nucleus interaction are studied. We establish that selected terms repres…