268 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Jadavpur UniversityIN8 papers
- Aligarh Muslim UniversityIN2 papers
- Government College of Engineering & Ceramic TechnologyIN2 papers
- Indian Statistical InstituteIN2 papers
- Academia SinicaTW1 paper
- Baylor UniversityUS1 paper
- Government of West BengalIN1 paper
- Government Training College, HooghlyIN1 paper
- Harish-Chandra Research InstituteIN1 paper
- Indian Association for the Cultivation of ScienceIN1 paper
- Indian Institute of Science Education and Research KolkataIN1 paper
- Indira Gandhi Centre for Atomic ResearchIN1 paper
16 papers
An Inflationary Equation of State
Barun Kumar Pal
We have studied inflationary paradigm through an inflationary equation of state. With a single parameter equation of state as a function of the scalar field responsible for acceler…
Constraints on quintessence scalar field models using cosmological observations
Weiqiang Yang, M. Shahalam, Barun Pal +2
We consider a varieties of quintessence scalar field models in a homogeneous and isotropic geometry of the universe with zero spatial curvature aiming to provide stringent constrai…
Mutated hilltop inflation revisited
Barun Kumar Pal
In this work we re-investigate pros and cons of mutated hilltop inflation. Applying Hamilton-Jacobi formalism we solve inflationary dynamics and find that inflation goes on along t…
A Demonstration of Spectral Level Reconstruction of Intrinsic -mode Power
Barun Pal
We investigate the prospects and consequences of the spectral level reconstruction of primordial -mode power by solving the systems of linear equations assuming that the lensing…
Gravitationally influenced particle creation models and late-time cosmic acceleration
Supriya Pan, Barun Kumar Pal, Souvik Pramanik
In this work we focus on the gravitationally influenced adiabatic particle creation process, a mechanism that does not need any dark energy or modified gravity models to explain th…
Reduced LHC constraints for higgsino-like heavier electroweakinos
Manimala Chakraborti, Utpal Chattopadhyay, Arghya Choudhury +2
As a sequel to our earlier work on wino-dominated and (wino models), we focus on the pMSSM models where and $\tilde χ_{2,3}^{…
Quantum Gravity Effect in Torsion Driven Inflation and CP violation
Sayantan Choudhury, Barun Kumar Pal, Banasri Basu +1
We have derived an effective potential for inflationary scenario from torsion and quantum gravity correction in terms of the scalar field hidden in torsion. A strict bound on the C…
Charged anisotropic matter with linear or nonlinear equation of state
Victor Varela, Farook Rahaman, Saibal Ray +2
Ivanov pointed out substantial analytical difficulties associated with self-gravitating, static, isotropic fluid spheres when pressure explicitly depends on matter density. Simplif…
Vacuumless topological defects in Lyra geometry
F. Rahaman, S. Mal, M. Kalam
Few years ago, Cho and Vilenkin have proposed that topological defects can arise in symmetry breaking models without having degenerate vacua. These types of defects are known as va…
Features of galactic halo in a brane world model and observational constraints
K. K. Nandi, A. I. Filippov, F. Rahaman +4
Several aspects of the 4d imprint of the 5d bulk Weyl radiation are investigated within a recently proposed model solution. It is shown that the solution has a number of physically…
On the role of pressure anisotropy for relativistic stars admitting conformal motion
Farook Rahaman, Mubasher Jamil, Mehedi Kalam +2
We investigate the spacetime of anisotropic stars admitting conformal motion. The Einstein field equations are solved using different ansatz of the surface tension. In this investi…
Electromagnetic mass model admitting conformal motion
Saibal Ray, A A Usmani, F Rahaman +2
We study charged fluid spheres under the 4-dimensional Einstein-Maxwell space-time. The solutions thus obtained admitting conformal motion. We also investigate whether the solution…
Motion of Massive and Massless Test particles in Dyadosphere Geometry
B. Raychaudhuri, F. Rahaman, M. Kalam +1
Motion of massive and massless test particle in equilibrium and non-equilibrium case is discussed in a dyadosphere geometry through Hamilton-Jacobi method. Geodesics of particles a…
Local cosmic string and C-field
F. Rahaman, R. Mondal, M. Kalam
We investigate a local cosmic string with a phenomenological energy momentum tensor as prescribed by Vilenkin, in presence of C-field . The solutions of full nonlinear Einstein's e…
A theoretical construction of wormhole supported by Phantom Energy
F. Rahaman, M. Kalam, M. Sarker +1
A new solution has been presented for the spherically symmetric space time describing wormholes with Phantom Energy. The model suggests that the existence of wormhole is supported…
Hexagonal-to-Cubic Phase Transformation in GaN Nanowires by Ga+-Implantation
Sandip Dhara, Anindya Datta, Chi-We Hsu +7
Hexagonal to cubic phase transformation is studied in focused ion beam assisted Ga+-implanted GaN nanowires. Optical photoluminescence and cathodoluminescence studies along with hi…