424 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Panjab UniversityIN199 papers
- California Institute of TechnologyUS198 papers
- Fermi National Accelerator LaboratoryUS198 papers
- Charles UniversityCZ196 papers
- University of DelhiIN187 papers
- University of Wisconsin–MadisonUS187 papers
- University of VirginiaUS181 papers
- Tata Institute of Fundamental ResearchIN175 papers
- The Ohio State UniversityUS173 papers
- Université Paris-SaclayFR169 papers
- University of BolognaIT169 papers
- University of IowaUS169 papers
67 papers · 1 filter
Centripetal force on Casimir energies in -deformed rotating frame
E. Harikumar, K. V. Shajesh, Suman Kumar Panja
We investigate the implications of a fundamental length scale on the centripetal force on a rotating Casimir apparatus in -space-time. We model the Casimir apparatus rotating wi…
Modified 3D Massive Abelian 2-From Theory with a Single Pseudo-Scalar Field as a Phantom Field: BRST Approach
S. K. Panja, E. Harikumar, R. P. Malik
We obtain the off-shell nilpotent Becchi-Rouet-Stora-Tyutin (BRST) and anti-BRST symmetry transformations (corresponding to the infinitesimal classical gauge symmetry transformatio…
How does Casimir energy fall in -deformed space-time?
E. Harikumar, K. V. Shajesh, Suman Kumar Panja
We investigate the response of Casimir energies to fluctuations in a scalar field in a weak gravitational field in the -deformed space-time. We model the Casimir plates in a gra…
Pseudo-Scalar Field as a Possible Candidate for Phantom Field
E. Harikumar, R. P. Malik
We demonstrate the existence of a single pseudo-scalar (PS) field in the mathematically backed and parity preserving modifications of the standard Stckelberg formalism (…
Chaos and operator growth in 2d CFT
Surbhi Khetrapal
We study the out-of-time-ordered correlator (OTOC) in a zero temperature two dimensional conformal field theory (CFT) under evolution by a Liouvillian composed of the Virasoro gene…
Maximal acceleration in a Lorentz invariant non-commutative space-time
E. Harikumar, Suman Kumar Panja, Vishnu Rajagopal
In this paper, we derive the non-commutative corrections to the maximal acceleration in the Doplicher-Fredenhagen-Roberts (DFR) space-time and show that the effect of the non-commu…
Quantisation of Lorentz invariant scalar field theory in non-commutative space-time and its consequence
E. Harikumar, Vishnu Rajagopal
Quantisation of Lorentz invariant scalar field theory in Doplicher-Fredenhagen-Roberts (DFR) space-time, a Lorentz invariant, non-commutative space-time is studied. Absence of a un…
Casimir effect in DFR space-time
E. Harikumar, Suman Kumar Panja
Non-Commutative space-time introduces a fundamental length scale suggested by approaches to quantum gravity. Here we report the analysis of the Casimir effect for parallel plates s…
Emergence of maximal acceleration from non-commutativity of space-time
E. Harikumar, Leela Ganesh Chandra Lakkaraju, Vishnu Rajagopal
In this paper, we show that the causally connected -dimensional line element of the -deformed Minkowski space-time induces an upper cut-off on the proper acceleration and der…
Quantisation of -deformed Dirac equation
E. Harikumar, Vishnu Rajagopal
In this paper, we study the quantisation of Dirac field theory in the -deformed space-time. We adopt a quantisation method that uses only equations of motion for quantising the…
Maximal acceleration in non-commutative space-time and its implications
E. Harikumar, Vishnu Rajagopal
In this paper, we derive the non-commutative corrections to the maximal acceleration of a massive particle. Using the eight-dimensional kappa-deformed phase-space metric, we obtain…
Time-space noncommutativity and Casimir effect
E. Harikumar, Suman Kumar Panja, Vishnu Rajagopal
We show that the Casimir force and energy are modified in the kappa-deformed space-time. This is analysed by solving the Green's function corresponding to kappa-deformed scalar fie…
Quantisation of Klein-Gordon field in space-time: deformed oscillators and Unruh effect
E. Harikumar, Vishnu Rajagopal
In this paper we study the quantisation of scalar field theory in -deformed space-time. Using a quantisation scheme that use only field equations, we derive the quantisation rul…
Compact stars in quantum spacetime
E. Harikumar, Zuhair N S
We derive bounds on the deformation parameter of the -spacetime by analyzing the effect of non-commutativity on astrophysical model. We study compact stars, taken to be degenera…
Non-Commutative space-time and Hausdorff dimension
V. Anjana, E. Harikumar, A. K. Kapoor
We study the Hausdorff dimension of the path of a quantum particle in non-commutative space-time. We show that the Hausdorff dimension depends on the deformation parameter and…
Conformal quantum mechanics and holography in noncommutative space-time
Kumar S. Gupta, E. Harikumar, Zuhair N. S.
We analyze the effects of noncommutativity in conformal quantum mechanics (CQM) using the -deformed space-time as a prototype. Upto the first order in the deformation parameter,…
Hawking radiation in the kappa-spacetime
E. Harikumar, N. S. Zuhair
In this paper, we analyze the Hawking radiation of a kappa-deformed Schwarzchild black hole and obtain the deformed Hawking temperature. For this, we first derive deformed metric f…
Noncommutative scalar quasinormal modes and quantization of entropy of a BTZ black hole
Kumar S. Gupta, E. Harikumar, Tajron Jurić +2
We obtain an exact analytic expression for the quasinormal modes of a noncommutative massless scalar field in the background of a massive spinless BTZ black hole up to the first or…
Dimensional flow in the kappa-deformed space-time
Anjana V., E. Harikumar
We derive the modified diffusion equations defined on kappa-space-time and using these, investigate the change in the spectral dimension of kappa-space-time with the probe scale. T…
Twisted Fermionic Oscillator Algebra in -Minkowski space-time
Ravikant Verma
In this paper, we investigate the twisted algebra of the fermionic oscillators associated with Dirac field defined in -Minkowski space-time. Starting from -deformed Dirac the…
MICZ Kepler Systems in Noncommutative Space and Duality of Force Laws
Partha Guha, E. Harikumar, N. S. Zuhair
In this paper, we analyze the modification of integrable models in the -deformed space-time. We show that two dimensional isotropic oscillator problem, Kepler problem and MICZ-K…
Effects of Noncommutativity on the Black Hole Entropy
Kumar S. Gupta, E. Harikumar, Tajron Juric +2
In this paper the BTZ black hole geometry is probed with a noncommutative scalar field which obeys the -Minkowski algebra. The entropy of the BTZ black hole is calculated using…
Consistent Non-Minimal Couplings of Massive Higher-Spin Particles
Ignacio Cortese, Rakibur Rahman, M. Sivakumar
The mutual compatibility of the dynamical equations and constraints describing a massive particle of arbitrary spin, though essential for consistency, is generically lost in the pr…
Uniformly accelerated detector in the -deformed Dirac vacuum
E. Harikumar, Ravikant Verma
In this paper, we investigate how a uniformly accelerated detector responds to vacuum state of a Dirac field in the -Minkowski space-time. Starting from -deformed Dirac theor…