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Aspects of Tachyonic inflation with exponential potential

- M. Sami, P. Chingangbam, T. Qureshi
- Physics
- 17 May 2002

We consider issues related to tachyonic inflation with an exponential potential. We find an exact solution of the evolution equations in the slow roll limit in FRW cosmology. We also carry out a… Expand

Punctuated inflation and the low CMB multipoles

- R. K. Jain, P. Chingangbam, Jinn-Ouk Gong, L. Sriramkumar, T. Souradeep
- Physics
- 23 September 2008

We investigate inflationary scenarios driven by a class of potentials which are similar in form to those that arise in certain minimal supersymmetric extensions of the standard model. We find that… Expand

Minkowski Tensors in Two Dimensions - Probing the Morphology and Isotropy of the Matter and Galaxy Density Fields

- S. Appleby, P. Chingangbam, Changbom Park, S. E. Hong, Juhan Kim, V. Ganesan
- Physics
- 20 December 2017

We apply the Minkowski Tensor statistics to two dimensional slices of the three dimensional density field. The Minkowski Tensors are a set of functions that are sensitive to directionally dependent… Expand

Tensor Minkowski Functionals: first application to the CMB

- V. Ganesan, P. Chingangbam
- Physics, Computer Science
- 26 August 2016

TLDR

Morphology of 21cm brightness temperature during the Epoch of Reionization using Contour Minkowski Tensor

- Akanksha Kapahtia, P. Chingangbam, S. Appleby
- PhysicsJournal of Cosmology and Astroparticle Physics
- 15 April 2019

We use morphological descriptors, Betti numbers and Contour Minkowski Tensor (CMT) on 21cm brightness temperature excursion sets, to study the ionization and heating history of the intergalactic… Expand

On Minkowski Functionals of CMB polarization

- P. Chingangbam, V. Ganesan, K. Yogendran, Changbom Park
- Physics
- 12 May 2017

Statistics of the excursion sets in models with local primordial non-Gaussianity

- G. Rossi, P. Chingangbam, Changbom Park
- Computer Science
- 1 March 2010

TLDR

Betti Numbers of Gaussian Fields

- Changbom Park, Pratyush Pranav,
+6 authors W. Hellwing - Mathematics
- 30 June 2013

We present the relation between the genus in cosmology and the Betti numbers for excursion sets of three-and two-dimensional smooth Gaussian random fields, and numerically investigate the Betti… Expand

Constraint on noncommutative spacetime from PLANCK data

- K. JobyP., P. Chingangbam, Subinoy Das
- Physics
- 18 December 2014

We constrain the energy scale of noncommutativity of spacetime using CMB data from PLANCK. We find that PLANCK data puts the lower bound on the noncommutativity energy scale to about 20 TeV, which is… Expand

Tensor Minkowski Functionals for random fields on the sphere

- P. Chingangbam, K. Yogendran, K. JobyP., V. Ganesan, S. Appleby, Changbom Park
- Mathematics
- 14 July 2017

We generalize the translation invariant tensor-valued Minkowski Functionals which are de fined on two-dimensional flat space to the unit sphere. We apply them to level sets of random fields. The… Expand

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