Multi-field Inflation in High-Slope Potentials - INSPIRE

DataBETA

Multi-field Inflation in High-Slope Potentials

May 17, 2019

34 pages

Published in:

JCAP 04 (2020) 022

Published: Apr 15, 2020

e-Print:

1905.07495 [hep-th]

DOI:

10.1088/1475-7516/2020/04/022

Report number:

UTTG-05-19

View in:

reference search54 citations

Citations per year

Abstract: (IOP)

We present two families of multi-field potentials that support inflation while satisfying the refined de Sitter and the distance swampland conjectures. Both families feature Planck-compatible phenomenology. The first is a helix-type potential, in a flat field-space metric, that satisfies the conjectures via a high turning rate. This model has a tensor-to-scalar ratio close to, but below, the current experimental limits and small non-gaussianities. The second family, an example of orbital inflation, utilizes a negatively curved field metric to achieve prolonged inflation with nontrivial turning in the presence of a tachyonic direction. Although perturbations in this model undergo an exponential growth before horizon exit, it is always possible to match the measured amplitude of the power spectrum by lowering the scale of inflation if the turning rate is low enough. We identify a Planck-compatible region of parameter space in which the scale of inflation is above that of nucleosynthesis. Due to the rapid growth, this model predicts an exponentially suppressed value for the tensor-to-scalar ratio.

Note:

34 pages, 10 figures. v2: updated section 4 and appendix B to properly give credit to previous work. v3: fix geodesic prefactor in appendix C. v4: include new analysis of both potentials, matches version accepted for publication in JCAP

family: 2
perturbation: scalar
inflation
adiabatic
trajectory
freeze-out
geometry
helicity
superpotential

References(179)

Figures(10)

[1]

The Strong Multifield Slowroll Condition and Spiral Inflation

I-Sheng Yang
(
- Columbia U.
)

- Phys.Rev.D 85 (2012) 123532
•
e-Print:
- 1202.3388
•
DOI:
- 10.1103/PhysRevD.85.123532

[2]

The string swampland constraints require multi-field inflation

Ana Achúcarro
(
- Leiden U. and
- Basque U., Bilbao
)
,
Gonzalo A. Palma
(
- Chile U., Santiago
)

- JCAP 02 (2019) 041
•
e-Print:
- 1807.04390
•
DOI:
- 10.1088/1475-7516/2019/02/041

[3]

Hyperbolic Inflation

Adam R. Brown
(
- Stanford U., Phys. Dept.
)

- Phys.Rev.Lett. 121 (2018) 25, 251601
•
e-Print:
- 1705.03023
•
DOI:
- 10.1103/PhysRevLett.121.251601

[4]

Steep inflation: Ending brane world inflation by gravitational particle production

- Phys.Rev.D 64 (2001) 023509
•
e-Print:
- astro-ph/0006421
•
DOI:
- 10.1103/PhysRevD.64.023509

[5]

Steep inflation followed by Born-Infeld reheating

M. Sami
(
- IUCAA, Pune
)
,
N. Dadhich
(
- IUCAA, Pune
)
,
Tetsuya Shiromizu
(
- Tokyo Inst. Tech. and
- Waseda U., RISE
)

- Phys.Lett.B 568 (2003) 118-126
•
e-Print:
- hep-th/0304187
•
DOI:
- 10.1016/j.physletb.2003.07.001

[6]

Naturally inflating on steep potentials through electromagnetic dissipation

- Phys.Rev.D 81 (2010) 043534
•
e-Print:
- 0908.4089
•
DOI:
- 10.1103/PhysRevD.81.043534

[7]

Chromo-Natural Inflation: Natural inflation on a steep potential with classical non-Abelian gauge fields

Peter Adshead
(
- Chicago U., KICP and
- Chicago U., EFI
)
,
Mark Wyman
(
- Chicago U., KICP and
- Chicago U., EFI and
- Chicago U., Astron. Astrophys. Ctr. and
- Chicago U.
)

- Phys.Rev.Lett. 108 (2012) 261302
•
e-Print:
- 1202.2366
•
DOI:
- 10.1103/PhysRevLett.108.261302

[8]

Non-Gaussianities and chiral gravitational waves in natural steep inflation

- Phys.Rev.D 85 (2012) 123537
•
e-Print:
- 1203.5849
•
DOI:
- 10.1103/PhysRevD.85.123537

[9]

Tachyon inflation with steep potentials

- Phys.Rev.D 95 (2017) 10, 103506
•
e-Print:
- 1508.04760
•
DOI:
- 10.1103/PhysRevD.95.103506

[10]

Magnon Inflation: Slow Roll with Steep Potentials

Peter Adshead
(
- Illinois U., Urbana
)
,
Diego Blas
(
- CERN
)
,
C.P. Burgess
(
- McMaster U. and
- Perimeter Inst. Theor. Phys.
)
,
Peter Hayman
(
- McMaster U. and
- Perimeter Inst. Theor. Phys.
)
,
Subodh P Patil
(
- Geneva U.
)

- JCAP 11 (2016) 009
•
e-Print:
- 1604.06048
•
DOI:
- 10.1088/1475-7516/2016/11/009

[11]

Steep Eternal Inflation and the Swampland

Konstantinos Dimopoulos
(
- Lancaster U.
)

- Phys.Rev.D 98 (2018) 12, 123516
•
e-Print:
- 1810.03438
•
DOI:
- 10.1103/PhysRevD.98.123516

[12]

Multiple field inflation

David Wands
(
- Portsmouth U., ICG
)

- Lect.Notes Phys. 738 (2008) 275-304
•
e-Print:
- astro-ph/0702187
•
DOI:
- 10.1007/978-3-540-74353-8_8

[13]

On Non-Canonical Kinetic Terms and the Tilt of the Power Spectrum

Sera Cremonini
(
- Cambridge U., DAMTP and
- Texas A-M
)
,
Zygmunt Lalak
(
- Warsaw U.
)
,
Krzysztof Turzynski
(
- Warsaw U.
)

- Phys.Rev.D 82 (2010) 047301
•
e-Print:
- 1005.4347
•
DOI:
- 10.1103/PhysRevD.82.047301

[14]

Strongly Coupled Perturbations in Two-Field Inflationary Models

Sera Cremonini
(
- Cambridge U., DAMTP and
- Texas A-M
)
,
Zygmunt Lalak
(
- Warsaw U.
)
,
Krzysztof Turzynski
(
- Warsaw U.
)

- JCAP 03 (2011) 016
•
e-Print:
- 1010.3021
•
DOI:
- 10.1088/1475-7516/2011/03/016

[15]

Features of heavy physics in the CMB power spectrum

Ana Achucarro
(
- Leiden U. and
- Basque U., Bilbao
)
,
Jinn-Ouk Gong
(
- Leiden U.
)
,
Sjoerd Hardeman
(
- Leiden U.
)
,
Gonzalo A. Palma
(
- Chile U., Beauchef
)
,
Subodh P. Patil
(
- Ecole Normale Superieure and
- Ecole Polytechnique, CPHT
)

- JCAP 01 (2011) 030
•
e-Print:
- 1010.3693
•
DOI:
- 10.1088/1475-7516/2011/01/030

[16]

Geometrical Destabilization of Inflation

Sébastien Renaux-Petel
(
- ILP, Paris and
- Paris, Inst. Astrophys.
)
,
Krzysztof Turzyński
(
- Warsaw U.
)

- Phys.Rev.Lett. 117 (2016) 14, 141301
•
e-Print:
- 1510.01281
•
DOI:
- 10.1103/PhysRevLett.117.141301

[17]

On the Cosmological Implications of the String Swampland

Prateek Agrawal
(
- Harvard U., Phys. Dept.
)
,
Georges Obied
(
- Harvard U., Phys. Dept.
)
,
Paul J. Steinhardt
(
- Princeton U. and
- Princeton U., CTP and
- New York U., CCPP
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

- Phys.Lett.B 784 (2018) 271-276
•
e-Print:
- 1806.09718
•
DOI:
- 10.1016/j.physletb.2018.07.040

[18]

De Sitter Space and the Swampland

Georges Obied
(
- Harvard U., Phys. Dept.
)
,
Hirosi Ooguri
(
- Caltech and
- Tokyo U., IPMU
)
,
Lev Spodyneiko
(
- Caltech
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

e-Print:
- 1806.08362

[19]

Distance and de Sitter Conjectures on the Swampland

Hirosi Ooguri
(
- Caltech and
- Tokyo U., IPMU
)
,
Eran Palti
(
- Munich, Max Planck Inst.
)
,
Gary Shiu
(
- Wisconsin U., Madison
)
,
Cumrun Vafa
(
- Harvard U., Phys. Dept.
)

- Phys.Lett.B 788 (2019) 180-184
•
e-Print:
- 1810.05506
•
DOI:
- 10.1016/j.physletb.2018.11.018

[20]

Bounds on Slow Roll and the de Sitter Swampland

- JHEP 11 (2019) 075
•
e-Print:
- 1807.05193
•
DOI:
- 10.1007/JHEP11(2019)075

[21]

Bounds on Slow Roll at the Boundary of the Landscape

Sumit K. Garg
(
- CMR U., Bangalore
)
,
Chethan Krishnan
(
- Bangalore, Indian Inst. Sci.
)
,
M. Zaid Zaz
(
- ICTS, Bangalore
)

- JHEP 03 (2019) 029
•
e-Print:
- 1810.09406
•
DOI:
- 10.1007/JHEP03(2019)029

[22]

Further refining the de Sitter swampland conjecture

David Andriot
(
- CERN
)
,
Christoph Roupec
(
- Vienna, Tech. U.
)

- Fortsch.Phys. 67 (2019) 1-2, 1800105
•
e-Print:
- 1811.08889
•
DOI:
- 10.1002/prop.201800105

[23]

Conditions for (No) Eternal Inflation

Tom Rudelius
(
- Princeton, Inst. Advanced Study
)

- JCAP 08 (2019) 009
•
e-Print:
- 1905.05198
•
DOI:
- 10.1088/1475-7516/2019/08/009

[24]

Constraints and horizons for de Sitter with extra dimensions

Saurya Das
(
- Lethbridge U.
)
,
S. Shajidul Haque
(
- Windsor U.
)
,
Bret Underwood
(
- Pacific Lutheran U.
)

- Phys.Rev.D 100 (2019) 4, 046013
•
e-Print:
- 1905.05864
•
DOI:
- 10.1103/PhysRevD.100.046013

[25]

Swampland conjecture in $f(R)$ gravity by the Noether Symmetry Approach

Micol Benetti
(
- Naples U. and
- INFN, Naples
)
,
Salvatore Capozziello
(
- Naples U. and
- INFN, Naples and
- GSSI, Aquila and
- TUSUR, Tomsk
)
,
Leila Lobato Graef
(
- Niteroi, Fluminense U.
)

- Phys.Rev.D 100 (2019) 8, 084013
•
e-Print:
- 1905.05654
•
DOI:
- 10.1103/PhysRevD.100.084013

1-25 of 179
1
2
3
4
5
•••
8
25 / page