Varun Sahni - INSPIRE

139 results

Citation Summary

Most Recent

New models of quintessential inflation featuring plateau and hilltop potentials

Swagat S. Mishra
(
- Nottingham U.
)
,
Varun Sahni
(
- IUCAA, Pune
)

(Feb 6, 2024)

Published in:
- Eur.Phys.J.C 85 (2025) 1, 48
•
e-Print:
- 2402.04316 [astro-ph.CO]

DOI

reference search1 citation

Testing

Λ CDM

with eBOSS data using a model independent diagnostic

(Nov 7, 2022)

Published in:
- Phys.Rev.D 108 (2023) 8, 083505
•
e-Print:
- 2211.03344 [astro-ph.CO]

pdfDOI

reference search2 citations

Tabletop potentials for inflation from f(R) gravity

Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Swagat S. Mishra
(
- Nottingham U.
)

(Oct 4, 2022)

Published in:
- JCAP 03 (2023) 023
•
e-Print:
- 2210.01828 [gr-qc]

DOI

reference search10 citations

Canonical and Non-canonical Inflation in the light of the recent BICEP/Keck results

Swagat S. Mishra
(
- Nottingham U.
)
,
Varun Sahni
(
- IUCAA, Pune
)

(Feb 7, 2022)

e-Print:
- 2202.03467 [astro-ph.CO]

pdf

reference search16 citations

Phantom Braneworld and the Hubble Tension

Satadru Bag
(
- KASI, DaeJeon
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Arman Shafieloo
(
- KASI, DaeJeon and
- Chungnam Natl. U.
)
,
Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)

(Jul 7, 2021)

Published in:
- Astrophys.J. 923 (2021) 2, 212
•
e-Print:
- 2107.03271 [astro-ph.CO]

DOI

reference search21 citations

Curing inflationary degeneracies using reheating predictions and relic gravitational waves

Swagat S. Mishra
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Alexei A. Starobinsky
(
- Landau Inst.
)

(Jan 1, 2021)

Published in:
- JCAP 05 (2021) 075
•
e-Print:
- 2101.00271 [gr-qc]

pdfDOI

reference search53 citations

Primordial Black Holes from a tiny bump/dip in the Inflaton potential

Swagat S. Mishra
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)

(Oct 31, 2019)

Published in:
- JCAP 04 (2020) 007
•
e-Print:
- 1911.00057 [gr-qc]

pdfDOI

reference search162 citations

Revisiting Metastable Dark Energy and Tensions in the Estimation of Cosmological Parameters

Xiaolei Li
,
Arman Shafieloo
(
- KASI, DaeJeon and
- UST, Daejeon
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Alexei A. Starobinsky
(
- Landau ITP, Chernogolovka and
- Higher Sch. of Economics, Moscow
)

(Apr 8, 2019)

Published in:
- Astrophys.J. 887 153
•
e-Print:
- 1904.03790 [astro-ph.CO]

pdfDOI

reference search44 citations

Studying the morphology of H i isodensity surfaces during reionization using Shapefinders and percolation analysis

et al.

(Sep 14, 2018)

Published in:
- Mon.Not.Roy.Astron.Soc. 485 (2019) 2, 2235-2251
•
e-Print:
- 1809.05520 [astro-ph.CO]

pdfDOI

reference search28 citations

Emulating a ΛCDM-like expansion on the phantom brane

#10

(Jun 27, 2018)

Published in:
- Phys.Rev.D 97 (2018) 12, 123537
•
e-Print:
- 1807.00684 [gr-qc]

pdfDOI

reference search12 citations

Versatile parametrization of the perturbation growth rate on the phantom brane

#11

Alexander Viznyuk
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Satadru Bag
(
- IUCAA, Pune
)
,
Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Varun Sahni
(
- IUCAA, Pune
)

(May 25, 2018)

Published in:
- Phys.Rev.D 98 (2018) 6, 064024
•
e-Print:
- 1805.10405 [gr-qc]

pdfDOI

reference search4 citations

Unifying dark matter and dark energy with non-canonical scalars

#12

Swagat S. Mishra
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)

(Mar 26, 2018)

Published in:
- Eur.Phys.J.C 81 (2021) 7, 625
•
e-Print:
- 1803.09767 [gr-qc]

DOI

reference search15 citations

Initial conditions for Inflation in an FRW Universe

#13

Swagat S. Mishra
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Alexey V. Toporensky
(
- Sternberg Astron. Inst. and
- Kazan State U.
)

(Jan 15, 2018)

Published in:
- Phys.Rev.D 98 (2018) 8, 083538
•
e-Print:
- 1801.04948 [gr-qc]

pdfDOI

reference search50 citations

The shape and size distribution of H ii regions near the percolation transition

#14

(Jan 3, 2018)

Published in:
- Mon.Not.Roy.Astron.Soc. 477 (2018) 2, 1984-1992
•
e-Print:
- 1801.01116 [astro-ph.CO]

pdfDOI

reference search29 citations

New tracker models of dark energy

#15

(Sep 26, 2017)

Published in:
- JCAP 08 (2018) 009
•
e-Print:
- 1709.09193 [gr-qc]

pdfDOI

reference search30 citations

Sourcing Dark Matter and Dark Energy from

\alpha

-attractors

#16

Swagat S. Mishra
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Yuri Shtanov
(
- Taras Shevchenko U. and
- BITP, Kiev
)

(Mar 7, 2017)

Published in:
- JCAP 06 (2017) 045
•
e-Print:
- 1703.03295 [gr-qc]

pdfDOI

reference search28 citations

Metastable Dark Energy with Radioactive-like Decay

#17

Arman Shafieloo
(
- KASI, DaeJeon
)
,
Dhiraj Kumar Hazra
(
- APC, Paris
)
,
Varun Sahni
(
- IUCAA, Pune
)
,
Alexei A. Starobinsky
(
- Landau Inst.
)

(Oct 17, 2016)

Published in:
- Mon.Not.Roy.Astron.Soc. 473 (2018) 2, 2760-2770
•
e-Print:
- 1610.05192 [astro-ph.CO]

pdfDOI

reference search46 citations

Constraining the Cosmology of the Phantom Brane using Distance Measures

#18

Ujjaini Alam
(
- Indian Statistical Inst., Calcutta
)
,
Satadru Bag
(
- IUCAA, Pune
)
,
Varun Sahni
(
- IUCAA, Pune
)

(May 16, 2016)

Published in:
- Phys.Rev.D 95 (2017) 2, 023524
•
e-Print:
- 1605.04707 [astro-ph.CO]

pdfDOI

reference search60 citations

Cosmological perturbations on the Phantom brane

#19

Satadru Bag
(
- IUCAA, Pune
)
,
Alexander Viznyuk
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Varun Sahni
(
- IUCAA, Pune
)

(Mar 3, 2016)

Published in:
- JCAP 07 (2016) 038
•
e-Print:
- 1603.01277 [gr-qc]

pdfDOI

reference search11 citations

Modelling microtubules in the brain as n-qudit quantum Hopfield network and beyond.

#20

(2016)

Published in:
- Int. J. Gen. Syst. 45 (2016) 1, 41-54

DOI

reference search4 citations

A new recipe for

\Lambda

CDM

#21

Varun Sahni
(
- IUCAA, Pune
)
,
Anjan A. Sen
(
- Jamia Millia Islamia
)

(Oct 30, 2015)

Published in:
- Eur.Phys.J.C 77 (2017) 4, 225
•
e-Print:
- 1510.09010 [astro-ph.CO]

DOI

reference search20 citations

Arrow of time in dissipationless cosmology

#22

Varun Sahni
(
- IUCAA, Pune
)
,
Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)
,
Aleksey Toporensky
(
- Kazan State U. and
- Sternberg Astron. Inst.
)

(Jun 3, 2015)

Published in:
- Class.Quant.Grav. 32 (2015) 18, 182001
•
e-Print:
- 1506.01247 [gr-qc]

pdfDOI

reference search14 citations

Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations

#23

Varun Sahni
(
- IUCAA, Pune
)
,
Arman Shafieloo
(
- APCTP, Pohang and
- POSTECH, Pohang
)
,
Alexei A. Starobinsky
(
- Landau Inst.
)

(Jun 9, 2014)

Published in:
- Astrophys.J.Lett. 793 (2014) 2, L40
•
e-Print:
- 1406.2209 [astro-ph.CO]

pdfDOI

reference search246 citations

Can a variable gravitational constant resolve the faint young Sun paradox?

#24

Varun Sahni
(
- IUCAA, Pune
)
,
Yuri Shtanov
(
- BITP, Kiev and
- Taras Shevchenko U.
)

(May 17, 2014)

Published in:
- Int.J.Mod.Phys.D 23 (2014) 12, 1442018
•
e-Print:
- 1405.4369 [astro-ph.SR]

pdfDOI

reference search12 citations

J-PAS: The Javalambre-Physics of the Accelerated Universe Astrophysical Survey

#25

J-PAS

Collaboration

•

N. Benitez
(
- IAA, Granada and
- Rio de Janeiro Observ.
)

et al.

(Mar 20, 2014)

e-Print:
- 1403.5237 [astro-ph.CO]

pdf

reference search226 citations

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Varun Sahni(
IUCAA, Pune
)

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Varun Sahni(IUCAA, Pune)

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Varun Sahni(
IUCAA, Pune
)