Nonclassical primordial gravitational waves from the initial entangled state - INSPIRE

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Nonclassical primordial gravitational waves from the initial entangled state

Sugumi Kanno
(
- Osaka U.
)

May 16, 2019

12 pages

Published in:

Phys.Rev.D 100 (2019) 12, 123536

Published: Dec 20, 2019

e-Print:

1905.06800 [hep-th]

DOI:

10.1103/PhysRevD.100.123536

Report number:

OU-HET-1017

View in:

ADS Abstract Service

reference search24 citations

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Abstract: (APS)

The nonclassicality of primordial gravitational waves (PGWs) is characterized in terms of sub-Poissonian graviton statistics. The sub-Poissonian statistics are realized when quantum states are squeezed coherent states. In the presence of matter fields, the Universe experiences the squeezed coherent state during inflation. The condition to realize the sub-Poissonian graviton statistics is translated into the frequency range of gravitational waves. If the initial state is the Bunch-Davies vacuum, there is another necessary condition between phases of squeezing and coherent parameters. Here, we extend the initial state to entangled states. We consider α-vacua as the initial entangled state that are more general de Sitter invariant vacua than the Bunch-Davies vacuum. We find that, unlike the Bunch-Davies vacuum, PGWs generated in the initial entangled state become sub-Poissonian without requiring the condition between the phases.

Note:

22 pages, 6 figures

Cosmology
gravitational radiation: primordial
entanglement
squeezed state
coherent state
graviton
vacuum state
inflation

References(37)

Figures(6)

[1]

Can quantum mechanical description of physical reality be considered complete?

- Phys.Rev. 47 (1935) 777-780
•
DOI:
- 10.1103/PhysRev.47.777

[2]

Entanglement entropy in de Sitter space

- JHEP 02 (2013) 038
•
e-Print:
- 1210.7244
•
DOI:
- 10.1007/JHEP02(2013)038

[3]

Entanglement entropy of $\alpha$ -vacua in de Sitter space

Sugumi Kanno
(
- Cape Town U., Dept. Math.
)
,
Jeff Murugan
(
- Cape Town U., Dept. Math.
)
,
Jonathan P. Shock
(
- Cape Town U., Dept. Math.
)
,
Jiro Soda
(
- Kobe U.
)

- JHEP 07 (2014) 072
•
e-Print:
- 1404.6815
•
DOI:
- 10.1007/JHEP07(2014)072

[4]

Entanglement entropy of de Sitter space $\alpha$ -vacua

Norihiro Iizuka
(
- Osaka U., Inst. Phys.
)
,
Toshifumi Noumi
(
- Nishina Ctr., RIKEN
)
,
Noriaki Ogawa
(
- Nishina Ctr., RIKEN
)

- Nucl.Phys.B 910 (2016) 23-29
•
e-Print:
- 1404.7487
•
DOI:
- 10.1016/j.nuclphysb.2016.06.024

[5]

Entanglement negativity in the multiverse

Sugumi Kanno
(
)
,
Jonathan P. Shock
(
- Cape Town U., Dept. Math. and
- NITheP, Matieland
)
,
Jiro Soda
(
- Kobe U.
)

- JCAP 03 (2015) 015
•
e-Print:
- 1412.2838
•
DOI:
- 10.1088/1475-7516/2015/03/015

[6]

Quantum discord in de Sitter space

Sugumi Kanno
(
- Basque U., Bilbao and
- IKERBASQUE, Bilbao
)
,
Jonathan P. Shock
(
- Cape Town U., ACGC and
- NITheP, Matieland
)
,
Jiro Soda
(
- Kobe U.
)

- Phys.Rev.D 94 (2016) 12, 125014
•
e-Print:
- 1608.02853
•
DOI:
- 10.1103/PhysRevD.94.125014

[7]

Vacuum State of the Dirac Field in de Sitter Space and Entanglement Entropy

Sugumi Kanno
(
- Basque U., Bilbao and
- IKERBASQUE, Bilbao
)
,
Misao Sasaki
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Takahiro Tanaka
(
- Kyoto U. and
- Kyoto U., Yukawa Inst., Kyoto
)

- JHEP 03 (2017) 068
•
e-Print:
- 1612.08954
•
DOI:
- 10.1007/JHEP03(2017)068

[8]

Entangled de Sitter from stringy axionic Bell pair I: an analysis using Bunch–Davies vacuum

Sayantan Choudhury
(
- TIFR, Mumbai, Dept. Theor. Phys.
)
,
Sudhakar Panda
(
- NISER, Jatni and
- Bhubaneswar, Inst. Phys. and
- HBNI, Mumbai
)

- Eur.Phys.J.C 78 (2018) 1, 52
•
e-Print:
- 1708.02265
•
DOI:
- 10.1140/epjc/s10052-017-5503-4

[9]

Quantum entanglement in de Sitter space from stringy axion: An analysis using $\alpha$ vacua

Sayantan Choudhury
(
- IUCAA, Pune
)
,
Sudhakar Panda
(
- NISER, Jatni and
- Bhubaneswar, Inst. Phys. and
- HBNI, Mumbai
)

- Nucl.Phys.B 943 (2019) 114606
•
e-Print:
- 1712.08299
•
DOI:
- 10.1016/j.nuclphysb.2019.03.018

[10]

Quantum entanglement in de Sitter space with a wall, and the decoherence of bubble universes

- Phys.Rev.D 97 (2018) 8, 083520
•
e-Print:
- 1802.08794
•
DOI:
- 10.1103/PhysRevD.97.083520

[11]

Observation of Gravitational Waves from a Binary Black Hole Merger

LIGO Scientific and
Virgo

Collaborations

•

B.P. Abbott
(
- Caltech
)

et al.

- Phys.Rev.Lett. 116 (2016) 6, 061102
•
e-Print:
- 1602.03837
•
DOI:
- 10.1103/PhysRevLett.116.061102

[12]

The Japanese space gravitational wave antenna: DECIGO

Seiji Kawamura
(
- Tokyo U., ICRR and
- Natl. Astron. Observ. of Japan
)
,
Masaki Ando
(
- Kyoto U.
)
,
Naoki Seto
(
- Kyoto U.
)
,
Shuichi Sato
(
- Hosei U.
)
,
Takashi Nakamura
(
- Kyoto U.
)

et al.

- Class.Quant.Grav. 28 (2011) 094011
•
DOI:
- 10.1088/0264-9381/28/9/094011

[13]

eLISA/NGO: Astrophysics and cosmology in the gravitational-wave millihertz regime

Pau Amaro-Seoane
,
Sofiane Aoudia
,
Stanislav Babak
,
Pierre Binetruy
(
- APC, Paris
)
,
Emanuele Berti
(
- Caltech and
- Mississippi U.
)

et al.

- GW Notes 6 (2013) 4-110
•
e-Print:
- 1201.3621

[14]

Quant.Opt.

G.S. Agarwal

[15]

Detecting nonclassical primordial gravitational waves with Hanbury-Brown–Twiss interferometry

Sugumi Kanno
(
- Osaka U.
)
,
Jiro Soda
(
- Kobe U.
)

- Phys.Rev.D 99 (2019) 8, 084010
•
e-Print:
- 1810.07604
•
DOI:
- 10.1103/PhysRevD.99.084010

[16]

Gravitational wave spectrum in inflation with nonclassical states

Seoktae Koh
(
- Gunsan Natl. U.
)
,
Sang Pyo Kim
(
- Gunsan Natl. U.
)
,
Doo Jong Song
(
- Korea Astron. Observ., Taejon
)

- JHEP 12 (2004) 060
•
e-Print:
- gr-qc/0402065
•
DOI:
- 10.1088/1126-6708/2004/12/060

[17]

Inflation with General Initial Conditions for Scalar Perturbations

Sandipan Kundu
(
- Texas U., TCC and
- Texas U.
)

- JCAP 02 (2012) 005
•
e-Print:
- 1110.4688
•
DOI:
- 10.1088/1475-7516/2012/02/005

[18]

The Quantum theory of optical coherence

Roy J. Glauber
(
- Harvard U.
)

- Phys.Rev. 130 (1963) 2529-2539
•
DOI:
- 10.1103/PhysRev.130.2529

[19]

Inflationary Universe with Anisotropic Hair

Masa-aki Watanabe
(
- Kyoto U.
)
,
Sugumi Kanno
(
- Durham U., Dept. of Math.
)
,
Jiro Soda
(
- Kyoto U.
)

- Phys.Rev.Lett. 102 (2009) 191302
•
e-Print:
- 0902.2833
•
DOI:
- 10.1103/PhysRevLett.102.191302

[20]

Statistical Anisotropy from Anisotropic Inflation

Jiro Soda
(
- Kyoto U.
)

- Class.Quant.Grav. 29 (2012) 083001
•
e-Print:
- 1201.6434
•
DOI:
- 10.1088/0264-9381/29/8/083001

[21]

Gauge Fields and Inflation

- Phys.Rept. 528 (2013) 161-261
•
e-Print:
- 1212.2921
•
DOI:
- 10.1016/j.physrep.2013.03.003

[22]

Large Nongaussianity in Axion Inflation

Neil Barnaby
(
- Minnesota U.
)
,
Marco Peloso
(
- Minnesota U.
)

- Phys.Rev.Lett. 106 (2011) 181301
•
e-Print:
- 1011.1500
•
DOI:
- 10.1103/PhysRevLett.106.181301

[23]

Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity

- JCAP 04 (2011) 009
•
e-Print:
- 1102.4333
•
DOI:
- 10.1088/1475-7516/2011/04/009

[24]

Particle production during inflation and gravitational waves detectable by ground-based interferometers

- Phys.Rev.D 85 (2012) 023534,
- Phys.Rev.D 86 (2012) 069901 (erratum)
•
e-Print:
- 1109.0022
•
DOI:
- 10.1103/PhysRevD.85.023534

[24]

Particle production during inflation and gravitational waves detectable by ground-based interferometers

- Phys.Rev.D 85 (2012) 023534,
- Phys.Rev.D 86 (2012) 069901 (erratum)
•
e-Print:
- 1109.0022
•
DOI:
- 10.1103/PhysRevD.85.023534

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