Conservation of superhorizon curvature perturbations at one loop: Backreaction in the in-in formalism and Renormalization
Feb 12, 2025Citations per year
Abstract: (arXiv)
We show that the superhorizon-limit curvature perturbations are conserved at one-loop level in single-field inflation models with a transient non-slow-roll period. We take the spatially-flat gauge, where the backreaction plays a crucial role for the conservation of superhorizon curvature perturbations unless the counter terms are tuned. We calculate the backreaction with the in-in formalism. In addition, we explicitly show the renormalization of the UV divergences with the counter terms.Note:
- 23 pages, 2 figures, v2: references added, minor revision
References(77)
Figures(2)
- [1]
- •
- Phys.Rev.D 22 (1980) 1882-1905,
- Also in *Abbott, L.F. (ed.), Pi, S.Y. (ed.): Inflationary cosmology*, 202-225, and in *Kolb, E.W. (ed.), Turner, M.S. (ed.): The Early universe* 563-586
- [2]
- •
- Prog.Theor.Phys.Suppl. 78 (1984) 1-166,
- Prog. Theor. Phys. Suppl. 78 ( 1984) 1-166
- DOI:
- [3]
- ,
- •
- JHEP 12 (2010) 008
- e-Print:•
- [4]
- ,
- •
- JHEP 01 (2013) 109
- e-Print:•
- [5]
- ,
- ,
- •
- JHEP 07 (2012) 166
- e-Print:•
- [6]
- [7]
- •
- Nature 253 (1975) 5489, 251-252
- DOI:
- [8]
- ,
- ,
- •
- Phys.Rev.D 50 (1994) 7173-7178
- [9]
- •
- Astron.Astrophys. 318 (1997) 673
- e-Print:
- [10]
- ,
- ,
- •
- Phys.Rev.D 54 (1996) 6040-6058
- e-Print:•
- [11]
- •
- Astrophys.J.Lett. 594 (2003) L71-L74
- e-Print:•
- DOI:
- [12]
- ,
- ,
- ,
- •
- JCAP 04 (2010) 023
- e-Print:•
- [13]
- ,
- ,
- ,
- ,
- •
- Mod.Phys.Lett.A 29 (2014) 37, 1440005
- e-Print:•
- [14]
- ,
- ,
- •
- Phys.Rev.D 94 (2016) 8, 083504
- e-Print:•
- [15]
- ,
- ,
- ,
- ,
- •
- Phys.Rev.D 96 (2017) 4, 043504
- e-Print:•
- [16]
- ,
- ,
- •
- Phys.Rev.Lett. 120 (2018) 12, 121301
- e-Print:•
- [17]
- ,
- ,
- ,
- ,
- •
- Phys.Rev.Lett. 116 (2016) 20, 201301
- e-Print:•
- [18]
- •
- Phys.Dark Univ. 15 (2017) 142-147
- e-Print:•
- [19]
- ,
- ,
- ,
- •
- Phys.Rev.Lett. 117 (2016) 6, 061101,
- Phys.Rev.Lett. 121 (2018) 5, 059901 (erratum)
- e-Print:•
- [20]
- •
- J.Phys.Conf.Ser. 1051 (2018) 1, 012010
- e-Print:•
- [21]
- •
- Class.Quant.Grav. 35 (2018) 6, 063001
- e-Print:•
- [22]
- ,
- Kazunori Kohri(,)
- KEK, Tsukuba and
- Sokendai, Kanagawa and
- Tokyo U. and
- Oxford U.
- ,
- •
- Rept.Prog.Phys. 84 (2021) 11, 116902
- e-Print:•
- [23]
- •
- J.Phys.G 48 (2021) 4, 043001
- e-Print:•
- [24]
- ,
- ,
- Yuichiro Tada()
- Munich U., ASC and
- Nagoya U., IAR and
- Nagoya U. and
- KEK, Tsukuba
- •
- Chapter 4 - Primordial black holes, Editor(s): Manuel Arca Sedda, Elisa Bortolas, Mario Spera, Black Holes in the Era of Gravitational-Wave Astronomy, Elsevier, 2024, Pages 261-377
- e-Print:•
- [25]
- ,
- •
- Phys.Rev.Lett. 132 (2024) 22, 221003
- e-Print:•