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Rahaman F.,Jadavpur University | Banerjee A.,Adamas Institute of Technology
International Journal of Theoretical Physics | Year: 2012

We provide a new type of thin-shell wormhole from the black holes with dilaton and monopole fields. The dilaton and monopole that built the black holes may supply fuel to construct the wormholes. Several characteristics of this thin-shell wormhole have been discussed. Finally, we discuss the stability of the thin-shell wormholes with a "phantom-like" equation of state for the exotic matter at the throat. © 2011 Springer Science+Business Media, LLC.


Radinschi I.,Technical University Gheorghe Asachi | Rahaman F.,Jadavpur University | Banerjee A.,Adamas Institute of Technology
International Journal of Theoretical Physics | Year: 2012

In this paper we continue our study about the energy distribution of the Park, Kehagias-Sfetsos and Lü-Mei-Pope black hole solutions in the Hořava-Lifshitz theory of gravity. These gravitational backgrounds correspond to the standard Einstein-Hilbert action in the infrared limit. We perform the calculations in the Landau-Lifshitz and Weinberg prescriptions. In addition, we study some limiting and particular cases. Finally, we have made a comparison between the expressions for energy obtained in the Einstein, Møller, Landau-Lifshitz and Weinberg prescriptions, respectively. © 2011 Springer Science+Business Media, LLC.


Maiti R.,Adamas Institute of Technology | Gangopadhyay S.,University of Calcutta | Basu U.,University of Calcutta
Iranian Journal of Science and Technology, Transaction A: Science | Year: 2013

Scattering of an incoming wave train by a discontinuity at the upper surface of the ocean over a uniform porous bottom of finite depth is considered here in the framework of linearized water wave theory. By employing residue calculus method, the reflection and transmission coefficient are obtained. These coefficients are computed numerically for different values of the porosity parameter G and these results are displayed in a number of Figs.


Dutta A.,Adamas Institute of Technology | Gangopadhyay S.,Stellenbosch University | Gangopadhyay S.,West Bengal State University | Gangopadhyay S.,Inter-University Center for Astronomy and Astrophysics
General Relativity and Gravitation | Year: 2014

In this paper, we study the thermodynamics of black holes using a generalized uncertainty principle (GUP) with a correction term linear order in the momentum uncertainty. The mass-temperature relation and heat capacity are calculated from which critical and remnant masses are obtained. The results are exact and are found to be identical. The entropy expression gives the famous area theorem upto leading order corrections from GUP. In particular, the linear order term in GUP leads to a √A correction to the area theorem. Finally, the area theorem can be expressed in terms of a new variable termed as reduced horizon area only when the calculation is done to the next higher order correction from GUP. © 2014 Springer Science+Business Media New York.


Mitra A.,Adamas Institute of Technology
2015 E-Health and Bioengineering Conference, EHB 2015 | Year: 2015

Enhanced design towards information security for image data in health system is addressed. The paper reviews advancements in health systems and proposes new method using Cellular Automata for the design of enhanced image security in health system. A combination of Cellular Automata and Tent Map is proposed for providing randomness in image data encryption. © 2015 IEEE.

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