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Nov 14, 2013

Quantum Kerr(Newman) degenerate stringy vacua in 4D on a non-BPS brane

We investigate some of the quantum gravity effects on a vacuum created pair of $(D{\bar D})_3$-brane by a non-linear $U(1)$ gauge theory on a $D_4$-b…
Mar 30, 2015

Transition Redshift: New constraints from parametric and nonparametri…

In this paper, we use the Cosmokinematics approach to study the accelerated expansion of the Universe. This is a model independent approach and depen…
Dec 09, 2012
Molecular Networks

Flux-based classification of reactions reveals a functional bow-tie …

Unraveling the structure of complex biological networks and relating it to their functional role is an important task in systems biology. Here we att…
Jul 10, 2016

From Quantum to Classical in the Sky

Inflation has by-far set itself as one of the prime ideas in the current cosmological models that seemingly has an answer for every observed phenomen…
Apr 14, 2011
Superconductivity

Strong Coupling BCS Superconductivity and Holography

We attempt to give a holographic description of the microscopic theory of a BCS superconductor. Exploiting the analogy with chiral symmetry breaking …
Sep 08, 2010

Coude-feed stellar spectral library - atmospheric parameters

Context: Empirical libraries of stellar spectra play an important role in different fields. For example, they are used as reference for the automatic…
Sep 22, 2009
Strongly Correlated Electrons

Properties of CFTs dual to Charged BTZ black-hole

We study properties of strongly coupled CFT's with non-zero background electric charge in 1+1 dimensions by studying the dual gravity theory - which …
May 20, 2014

Reanalyzing the upper limit on the tensor-to-scalar perturbation rati…

We study the polynomial chaotic inflation model with a single scalar field in a double well quartic potential which has recently been shown to be con…
Sep 29, 2016

Reheating constraints on Kähler Moduli Inflation

The end of inflation is connected to the standard cosmological scenario through reheating. During reheating, the inflaton oscillates around the minim…
Sep 13, 2013
Mesoscale and Nanoscale Physics

Electronic transport in DNA functionalized graphene sensors

A theoretical understanding of the experimental electronic transport phenomena in gas sensors based on DNA functionalized graphene is presented by qu…
Nov 25, 2014
Mesoscale and Nanoscale Physics

Topological p-n junctions in helical edge states

Quantum spin Hall effect is endowed with topologically protected edge modes with gapless Dirac spectrum. Applying a magnetic field locally along the …
Jul 06, 2015

It's a dark, dark world: Background evolution of interacting $φ$CDM …

We study the background cosmological dynamics with a three component source content: a radiation fluid, a barotropic fluid to mimic the matter sector…
Dec 20, 2013

In this paper, an attempt has been made to investigate the possibility of generating primordial cosmic magnetic fields in certain cosmological models motivated by higher dimensions. The approach in this paper is to include the Gauss-Bonnet term in t…

Cosmological Magnetogenesis From Extra-dimensional Gauss Bonnet Gravi…

Generation of primordial magnetic fields during inflation typically requires the breaking of conformal invariance of the Electromagnetic action. In t…
Nov 05, 2008
Materials Science
Mesoscale and Nanoscale Physics

Effect of gas flow on electronic transport in a DNA-decorated carbon …

We calculate the two-time current correlation function using the experimental data of the current-time characteristics of the Gas-DNA-decorated carbo…
Oct 16, 2015

Coulomb screening in linear coasting nucleosynthesis

We investigate the impact of coulomb screening on primordial nucleosynthesis in a universe having scale factor that evolves linearly with time. Coulo…
Feb 21, 2010
Popular Physics
Classical Physic
Physics Education

The Moving Center of Mass of a Leaking Bob

The evaluation of variation in oscillation time period of a simple pendulum as its mass varies proves a rich source of discussion in a physics class-…
Jan 20, 2010

Photometry of the $δ$ Scuti star HD 40372

We present B band photometry of the $\delta$ Scuti star HD 40372 using the ARIES three channel fast photometer attached to the 104-cm Sampurnanand te…
Aug 17, 2013

Quark-Gluon plasma fireball evolution with one loop correction in the…

The study of free energy evolution of quark-gluon plasma (QGP) with one loop correction factor in the peshier potential is discussed. The energy evol…
Dec 30, 2013

Constraints on Lepton Asymmetry from Nucleosynthesis in a Linearly …

We study the effect of neutrino degeneracy on primordial nucleosynthesis in a universe in which the cosmological scale factor evolves linearly with t…
Nov 22, 2016

Constraining cosmic curvature by using age of galaxies and gravitatio…

We use two model-independent methods to constrain the curvature of the universe. In the first method, we study the evolution of the curvature paramet…
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