Particle Physics and Cosmology Group

Slides:

Advertisements

Similar presentations

Benasque 2012 Luca Amendola University of Heidelberg in collaboration with Martin Kunz, Mariele Motta, Ippocratis Saltas, Ignacy Sawicki Horndeski Lagrangian:

Advertisements

Hot topics in Modern Cosmology Cargèse - 10 Mai 2011.

Non-Gaussianity of superhorizon curvature perturbations beyond δN-formalism Resceu, University of Tokyo Yuichi Takamizu Collaborator: Shinji Mukohyama.

Gradient expansion approach to multi-field inflation Dept. of Physics, Waseda University Yuichi Takamizu 29 th JGRG21 Collaborators: S.Mukohyama.

Cosmological CPT Violation, Baryo/leptogenesis and CMB Polarization Mingzhe Li Nanjing University.

Yi-Peng Wu Department of Physics, National Tsing Hua University May Chongquing 2012 Cross-Strait Meeting on Particle Physics and Cosmology Collaborate.

Intersecting membrane and an anisotropic models of dark energy Dmitry G. Orlov (NCU, Taiwan; VNIIMS, Russia) 1st June, 2008NDHU, Taiwan.

Hawking-Moss instantons in nonlinear Massive Gravity Ying-li Zhang (D3) YITP, Kyoto University Lunch Meeting 3 October 2012 Cooperator: Ryo Saito, Misao.

Gravitational Radiation from Symmetry Breaking Kate Jones-Smith Harsh Mathur, Lawrence Krauss CWRU BCCS Workshop December

Spherical Collapse in Chameleon Models Rogerio Rosenfeld Rogerio Rosenfeld Instituto de Física Teórica Instituto de Física Teórica UNESP UNESP 2nd Bethe.

Chiral freedom and the scale of weak interactions.

The Curvature Perturbation from Vector Fields: the Vector Curvaton Case Mindaugas Karčiauskas Dimopoulos, Karčiauskas, Lyth, Rodriguez, JCAP 13 (2009)

The Statistically Anisotropic Curvature Perturbation from Vector Fields Mindaugas Karčiauskas Dimopoulos, MK, JHEP 07 (2008) Dimopoulos, MK, Lyth, Rodriguez,

New Inflation Amy Bender 05/03/2006. Inflation Basics Perturbations from quantum fluctuations of scalar field Fluctuations are: –Gaussian –Scale Invariant.

Hep-th/ Leonardo Senatore (Harvard) With P.Creminelli, M. A. Luty, A. Nicolis Starting the Universe: Stable violation of the Null Energy Condition.

Based on Phys.Rev.D84:043515,2011,arXiv: &JCAP01(2012)016 Phys.Rev.D84:043515,2011,arXiv: &JCAP01(2012)016.

1 f(R) Gravity and its relation to the interaction between DE and DM Bin Wang Shanghai Jiao Tong University.

Antisymmetric metric fluctuations as dark matter By Tomislav Prokopec (Utrecht University) Cosmo 07, Brighton 22 Aug 2007 ˚1˚ Based on publications: T.

HOLOGRAPHY, DIFFEOMORHISMS, AND THE CMB Finn Larsen University of Michigan Quantum Black Holes at OSU Ohio Center for Theoretical Science September

Effective field theory approach to modified gravity with applications to inflation and dark energy Shinji Tsujikawa Hot Topics in General Relativity And.

Yoshiharu Tanaka (YITP) Gradient expansion approach to nonlinear superhorizon perturbations Finnish-Japanese Workshop on Particle Helsinki,

Self – accelerating universe from nonlinear massive gravity Chunshan Lin Kavli

Black hole production in preheating Teruaki Suyama (Kyoto University) Takahiro Tanaka (Kyoto University) Bruce Bassett (ICG, University of Portsmouth)

1 Circular Polarization of Gravitational Waves in String Cosmology MIAMI, 200 ７ Jiro Soda Kyoto University work with Masaki Satoh & Sugumi Kanno.

Probing the Reheating with Astrophysical Observations Jérôme Martin Institut d’Astrophysique de Paris (IAP) 1 [In collaboration with K. Jedamzik & M. Lemoine,

The anisotropic inflation and its imprints on the CMB Kyoto University Masaaki WATANABE Ref: MW, Sugumi Kanno, and Jiro Soda [1] 2009, arXiv:

Gauss-Bonnet inflation 郭宗寛 (Zong-Kuan Guo) ITP, CAS 3rd Joint Retreat on Cosmology and LHC Physics November 2, 2012.

Higher Derivative Scalars in Supergravity Jean-Luc Lehners Max Planck Institute for Gravitational Physics Albert Einstein Institute Based on work with.

Dark Energy and Modified Gravity Shinji Tsujikawa (Gunma National College of Technology ） Collaborations with L. Amendola, S. Capozziello, R. Gannouji,

Giuseppe De Risi M. Cavaglià, G.D., M. Gasperini, Phys. Lett. B 610:9-17, hep-th/ QG05, Sept

Tachyon-Dilaton driven Inflation as an α'-non perturbative solution in first quantized String Cosmology Anna Kostouki, King’s College London DISCRETE ’08,

Cosmological Perturbations in the brane worlds Kazuya Koyama Tokyo University JSPS PD fellow.

Leading order gravitational backreactions in de Sitter spacetime Bojan Losic Theoretical Physics Institute University of Alberta IRGAC 2006, Barcelona.

Inflationary Theory of Primordial Cosmological Perturbation Project for General Relativity (Instructor: Prof.Whiting) Sohyun Park.

Hirophysics.com PATRICK ABLES. Hirophysics.com PART 1 TIME DILATION: GPS, Relativity, and other applications.

Phenomenology of beyond Horndeski theories Kazuya Koyama University of Portsmouth.

Can observations look back to the beginning of inflation ?

The Cosmic Microwave Background

Inflation coupled to the GB correction Zong-Kuan Guo Hangzhou workshop on gravitation and cosmology Sep 4, 2014.

Gravitational Waves from primordial density perturbations Kishore N. Ananda University of Cape Town In collaboration with Chris Clarkson and David Wands.

Inflation in modified gravitational theories Shinji Tsujikawa Tokyo University of Science (TUS) with Antonio De Felice (TUS), Joseph Elliston, Reza Tavakol.

1 Loop corrections to the primordial perturbations Yuko Urakawa (Waseda university) Kei-ichi Maeda (Waseda university)

Causality constraints on graviton three point functions Juan Maldacena Based on: Camanho, Edelstein, JM., Zhiboedov. arXiv:

On the Lagrangian theory of cosmological density perturbations Isolo di San Servolo, Venice Aug 30, 2007 V. Strokov Astro Space Center of the P.N. Lebedev.

University of Oslo & Caltech

Teruaki Suyama Black hole perturbation in modified gravity Research Center for the Early Universe, University of Tokyo 公募研究 ( 計画研究 A05) 「強い重力場での修正重力理論の検証に向けた理論的研究」

Anisotropic Mechanics J.M. Romero, V. Cuesta, J.A. Garcia, and J. D. Vergara Instituto de Ciencias Nucleares, UNAM, Mexico.

Thermodynamical behaviors of nonflat Brans-Dicke gravity with interacting new agegraphic dark energy Xue Zhang Department of Physics, Liaoning Normal University,

THE ISOTOPIC FOLDY-WOUTHUYSEN REPRESENTATION

Unitarity constraints on h/s

Zong-Kuan Guo Department of Physics, Kinki University

Charged black holes in string-inspired gravity models

Recent status of dark energy and beyond

Late-time Cosmology with String Gases

dark matter Properties stable non-relativistic non-baryonic

Geometric Integrators in the Study of Gravitational Collapse

in collaboration with M. Bojowald, G. Hossain, S. Shankaranarayanan

Primordial non-Gaussianity from multifield DBI Galileons

Inflation with a Gauss-Bonnet coupling

2012 International Workshop on String Theory and Cosmology

Notes on non-minimally derivative coupling

Quantum Spacetime and Cosmic Inflation

Shintaro Nakamura (Tokyo University of Science)

Pedro G. Ferreira University of Oxford

Nuclear Forces - Lecture 5 -

43rd Rencontres de Moriond La Thuile (Val d'Aosta, Italy)

Outline of the Lectures

A Swampland Update Cumrun Vafa Harvard University PASCOS 2019

Collaborator: Taifan Zheng Supervisor: Edna Cheung

Inflation theory MASAHIDE YAMAGUCHI (Tokyo Institute of Technology)

Presentation transcript:

Particle Physics and Cosmology Group Parametric amplification of chiral gravitational waves in single field inflation M. Mylova, G. Tasinato Particle Physics and Cosmology Group Swansea University Swansea, U.K. PASCOS, July 2019

Circular polarization degree Parity Violation in Gravity Circular polarization degree Saito, Ichiki Taruya (2007) Gluscevic, Kamionkowski (2010)

Action: Einstein-Hilbert + CS Chern Simons Instability Action: Einstein-Hilbert + CS Alexander, Martin (2004) Metric perturbation Evolution equations CS Instability FRW background Effective potential Amplitudes Dyda, Flanagan, Kamionkowski (2012)

We put forward a framework: Produces a large circular polarization degree Ensures stability for all modes

EFT of Scalar-Tensor gravity Extended action: Leading-order Higher-order corrections Kobayashi, Yamaguchi, Yokoyama (2011) NLO: Weinberg (2008) NNLO pv: Chrisostomi, Noui, Charmousis (2018) NNLO pp: Solomon, Trodden (2018) Partial extension*: *Excluding contributions of the form

NNLO operators Important! Enhancing NLO & NNLO operators Disformally map higher-order corrections to the Horndeski action This introduces a range of effective mass scales Disformal mapping NNLO operators Important! Bekenstein (1993), Zumalacarregui, Bellido (2014) Domenech, Sasaki (2015) Scale of new physics Time derivatives are enhanced with respect to spatial derivatives Effective mass-scales Energy scale of inflation Similar conclusions, albeit with some difference as in the EFTI formulations of Cheung, Creminelli, Fitzpatrick, Kaplan, Senatore (2008)

Action guarantees second-order equations of motion: Ostrogradsky no-go theorem At NLO+NNLO order Field redefinitions, possible but difficult to find! Gong, Seoc, Sypsas (2014) Instead, make an educated guess… Remove offending terms Action guarantees second-order equations of motion:

Dynamical parameters drop out Validity of the EFT Effective potential Constraint Dynamical parameters: Special case: Dynamical parameters drop out Example: Constraint always satisfied Ensures stability for all modes!

Demand theory is weakly coupled at horizon crossing Strong Coupling Scale Scale of new physics Restore fake Lorentz invariance Baumann, Green (2011) Strong coupling scale Energy scale of inflation Demand theory is weakly coupled at horizon crossing

Solve evolution and constraint equations in the simplest way possible: A toy model Solve evolution and constraint equations in the simplest way possible: Tensor powerspectrum Left-modes are enhanced! Maximum enhancement

Future Considerations Understand how NNLO corrections affect post-inflationary dynamics. Find a phenomenologically viable inflationary model that satisfies this special case. A complete analyses is needed on the full set of NNLO non-redundant operators. Find a field redefinition for tensors at NLO+NNLO.

Final remarks Jordan frame Einstein frame Einstein frame of a general scalar-tensor extension Geometrically related extensions to gravity Need additional DOF for the theory to be weakly coupled up to Strongly coupled Jordan frame Weakly coupled Baumann, Green (2011) Gwyn, Palma, Sypsas Sakellariadou (2013) Disformal Transformation Einstein frame Weakly coupled Weinberg (2008)

Thank you for your attention!