Publications (82)
Induced cosmological constant and other features of asymmetric brane embedding
Yuri Shtanov, Varun Sahni, Arman Shafieloo +1
The Cosmological Constant Problem and Quintessence
Varun Sahni
Emulating $Î$CDM-like expansion on the Phantom brane
Satadru Bag, Swagat S. Mishra, Varun Sahni
Generalizing the Cosmic Energy Equation
Yuri Shtanov, Varun Sahni
Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
Varun Sahni, Arman Shafieloo, Alexei A. Starobinsky
A no-boundary proposal for braneworld perturbations
Alexander Viznyuk, Yuri Shtanov, Varun Sahni
Statefinder -- a new geometrical diagnostic of dark energy
Varun Sahni, Tarun Deep Saini, A. A. Starobinsky +1
Supernova Constraints on Braneworld Dark Energy
Ujjaini Alam, Varun Sahni
Gravitational instability on the brane: the role of boundary conditions
Yuri Shtanov, Alexander Viznyuk, Varun Sahni
Cosmic Mimicry: Is LCDM a Braneworld in Disguise ?
Varun Sahni, Yuri Shtanov, Alexander Viznyuk
Scalar field models for an accelerating universe
Varun Sahni
New Cosmological Singularities in Braneworld Models
Yuri Shtanov, Varun Sahni
The Statefinder hierarchy: An extended null diagnostic for concordance cosmology
Maryam Arabsalmani, Varun Sahni
A new recipe for $Î$CDM
Varun Sahni, Anjan A Sen
Is cosmic acceleration slowing down?
Arman Shafieloo, Varun Sahni, Alexei A. Starobinsky
The Evolution of Voids in the Adhesion Approximation
Varun Sahni, B. S. Sathyaprakash, Sergei F. Shandarin
Exploring the Geometry, Topology and Morphology of Large Scale Structure using Minkowski Functionals
Jatush V. Sheth, Varun Sahni
Probing Large Scale Structure using Percolation and Genus Curves
Varun Sahni, B. S. Sathyaprakash, S. F. Shandarin
Recycling the universe using scalar fields
Nissim Kanekar, Varun Sahni, Yuri Shtanov
Does Inflationary Particle Production suggest Omega_m < 1?
Varun Sahni, Salman Habib
Did the Universe loiter at high redshifts ?
Varun Sahni, Yuri Shtanov
Anisotropy dissipation in brane-world inflation
Roy Maartens, Varun Sahni, Tarun Deep Saini
Resurrecting power law inflation in the light of Planck results
Sanil Unnikrishnan, Varun Sahni
The case for dynamical dark energy revisited
Ujjaini Alam, Varun Sahni, A. A. Starobinsky
Searching for systematics in SNIa and galaxy cluster data using the cosmic duality relation
Arman Shafieloo, Subhabrata Majumdar, Varun Sahni +1
Shapefinders: A new shape diagnostic for large scale structure
Varun Sahni, B. S. Sathyaprakash, Sergei F. Shandarin
Possible use of self-calibration to reduce systematic uncertainties in determining distance-redshift relation via gravitational radiation from merging binaries
Tarun Deep Saini, Shiv K. Sethi, Varun Sahni
Quantum effects, soft singularities and the fate of the universe in a braneworld cosmology
Petr Tretyakov, Aleksey Toporensky, Yuri Shtanov +1
Two new diagnostics of dark energy
Varun Sahni, Arman Shafieloo, Alexei A. Starobinsky
Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
Ujjaini Alam, Varun Sahni, Tarun Deep Saini +1
Sourcing Dark Matter and Dark Energy from $α$-attractors
Swagat S. Mishra, Varun Sahni, Yuri Shtanov
Is there Supernova Evidence for Dark Energy Metamorphosis ?
Ujjaini Alam, Varun Sahni, Tarun Deep Saini +1
Post-COBE predictions for Inflationary Gravity Wave and Density Perturbation spectra
Varun Sahni, Tarun Souradeep
Cosmological Hysteresis and the Cyclic Universe
Varun Sahni, Aleksey Toporensky
Exploring dark energy using the Statefinder
Varun Sahni
Constraining the Cosmology of the Phantom Brane using Distance Measures
Ujjaini Alam, Satadru Bag, Varun Sahni
Reconstructing Cosmological Matter Perturbations using Standard Candles and Rulers
Ujjaini Alam, Varun Sahni, Alexei A. Starobinsky
New Universal Local Feature in the Inflationary Perturbation Spectrum
Minu Joy, Varun Sahni, Alexei A. Starobinsky
Unifying Dark Matter and Dark Energy with non-Canonical Scalars
Swagat S. Mishra, Varun Sahni
Cosmological perturbations on the Phantom brane
Satadru Bag, Alexander Viznyuk, Yuri Shtanov +1
The Large Scale Structure of the Universe: Theory {\it vs.} Observations
Varun Sahni
Initial conditions for Inflation in an FRW Universe
Swagat S. Mishra, Varun Sahni, Alexey V. Toporensky
Reconstructing the Cosmic Equation of State from Supernova distances
Tarun Deep Saini, Somak Raychaudhury, Varun Sahni +1
Reconstructing the Properties of Dark Energy using Standard Sirens
Maryam Arabsalmani, Varun Sahni, Tarun Deep Saini
Exploring the Properties of Dark Energy Using Type Ia Supernovae and Other Datasets
Ujjaini Alam, Varun Sahni, Alexei A. Starobinsky
Can a marginally open universe amplify magnetic fields?
Yuri Shtanov, Varun Sahni
Cosmological Surprises from Braneworld models of Dark Energy
Varun Sahni
A new null diagnostic customized for reconstructing the properties of dark energy from BAO data
Arman Shafieloo, Varun Sahni, Alexei A. Starobinsky
Can a variable gravitational constant resolve the Faint Young Sun Paradox ?
Varun Sahni, Yuri Shtanov
Braneworld dynamics in Einstein-Gauss-Bonnet gravity
Hideki Maeda, Varun Sahni, Yuri Shtanov
Evidence for Filamentarity in the Las Campanas Redshift Survey
Somnath Bharadwaj, Varun Sahni, B. S. Sathyaprakash +2
Disentangling the Cosmic Web I: Morphology of Isodensity Contours
Jens Schmalzing, Thomas Buchert, Adrian L. Melott +3
Reconstructing Dark Energy
Varun Sahni, Alexei Starobinsky
Can dark energy be decaying?
Ujjaini Alam, Varun Sahni, A. A. Starobinsky
Measuring the Geometry and Topology of Large Scale Structure using SURFGEN: Methodology and Preliminary Results
Jatush V. Sheth, Varun Sahni, Sergei F. Shandarin +1
Rejoinder to "No Evidence of Dark Energy Metamorphosis", astro-ph/0404468
Ujjaini Alam, Varun Sahni, Tarun Deep Saini +1
Arrow of time in dissipationless cosmology
Varun Sahni, Yuri Shtanov, Aleksey Toporensky
Emergent Cosmology Revisited
Satadru Bag, Varun Sahni, Yuri Shtanov +1
Non-Linear Approximations to Gravitational Instability: A Comparison in the Quasi-Linear Regime
Dipak Munshi, Varun Sahni, Alexei A. Starobinsky
Metastable Dark Energy with Radioactive-like Decay
Arman Shafieloo, Dhiraj Kumar Hazra, Varun Sahni +1
Refining inflation using non-canonical scalars
Sanil Unnikrishnan, Varun Sahni, Aleksey Toporensky
The Shape and Size distribution of HII Regions near the percolation transition
Satadru Bag, Rajesh Mondal, Prakash Sarkar +2
Confronting Braneworld Cosmology with Supernova data and Baryon Oscillations
Ujjaini Alam, Varun Sahni
Is a step in the primordial spectral index favored by CMB data ?
Minu Joy, Arman Shafieloo, Varun Sahni +1
The Case for a Positive Cosmological Lambda-term
Varun Sahni, Alexei Starobinsky
Filaments and Pancakes in the IRAS 1.2 Jy Redshift Catalogue
B. S. Sathyaprakash, Varun Sahni, Sergei F. Shandarin +1
Bouncing Braneworlds
Yuri Shtanov, Varun Sahni
Versatile parametrization of the perturbation growth rate on the phantom brane
Alexander Viznyuk, Satadru Bag, Yuri Shtanov +1
Morphology of Clusters and Superclusters in N-body simulations of Cosmological Gravitational Clustering
B. S. Sathyaprakash, Varun Sahni, Sergei F. Shandarin
Density Perturbations,Gravity Waves and the Cosmic Microwave Background
Tarun Souradeep, Varun Sahni
Quantum effects near a point mass in 2+1 dimensional gravity
Tarun Souradeep, Varun Sahni
New Vistas in Braneworld Cosmology
Varun Sahni, Yuri Shtanov
New tracker models of dark energy
Satadru Bag, Swagat S. Mishra, Varun Sahni
EVOLUTION OF THE POTENTIAL IN COSMOLOGICAL GRAVITATIONAL CLUSTERING
Adrian L. Melott, B. S. Sathyaprakash, Varun Sahni
A New Cosmological Model of Quintessence and Dark Matter
Varun Sahni, Limin Wang
Relic Gravity Waves from Braneworld Inflation
Varun Sahni, M. Sami, Tarun Souradeep
APSIS - an Artificial Planetary System in Space to probe extra-dimensional gravity and MOND
Varun Sahni, Yuri Shtanov
Ya. B. Zeldovich (1914-1987): Chemist, Nuclear Physicist, Cosmologist
Varun Sahni
Smoothing Supernova Data to Reconstruct the Expansion History of the Universe and its Age
Arman Shafieloo, Ujjaini Alam, Varun Sahni +1
Approximation Methods for Non-linear Gravitational Clustering
Varun Sahni, Peter Coles
Cosmic Acceleration and Extra Dimensions
Varun Sahni, Yuri Shtanov
Braneworld models of dark energy
Varun Sahni, Yuri Shtanov