Conveners
Parallel Sessions: Cosmology & Astroparticle Physics - Inflation + Gws
- Chiara Caprini
- Valerie Domcke
Ms
SİBEL BORAN
(Istanbul Technical University)
28/09/2017, 16:05
Cosmology & Astroparticle Physics
I will discuss quantum corrections during inflation in general.
And in particular, I will talk about our recent work on the one loop order corrections of gravitons to scalar mode functions which is conformally coupled to gravity.
Ms
Sukannya Bhattacharya
(Saha Institute of Nuclear Physics)
28/09/2017, 16:22
Cosmology & Astroparticle Physics
The dissipative mechanism in warm inflation scenario can provide the inflating universe with a warm exit to the radiation dominated era rather than a supercooled exit to a reheating phase. In this work, we constrain the model parameters for warm inflation from Planck 2015 data. In addition, the reheating era can be optimized by varying the number of $e$-folds of inflation. Best fit values for...
Ms
Deanna C. Hooper
(RWTH Aachen, TTK Institute)
28/09/2017, 16:39
Cosmology & Astroparticle Physics
Despite the increasingly more precise constraints on the amplitude and tilt of the primordial power spectrum, the shape of the inflaton potential is still largely unconstrained. This allows for potentials with oscillating contributions, such as the string theory motivated axion monodromy inflation. However, dealing with these models is computationally expensive, and as such analytical...
Dr
Laura Sagunski
(York University / Perimeter Institute)
28/09/2017, 16:56
Cosmology & Astroparticle Physics
The recent first direct detection of gravitational waves by the Laser Interferometer Gravitational-Wave Observatory (LIGO) has marked the dawn of a new era for probing the theory of general relativity (GR) as well as possible modifications of it. To test gravity at extreme conditions, current and future gravitational wave detectors are targeted to explore merging binary systems of black holes...
Dr
Subodh Patil
(Niels Bohr Institute)
28/09/2017, 17:13
Cosmology & Astroparticle Physics
We develop a unified description via the Boltzmann equation, of damping of gravitational waves by matter incorporating collisions. We identify two physically distinct damping mechanisms -- collisional and Landau damping. Maximal collisional damping of a gravitational wave, independent of the details of the matter collisions is significant only when its wavelength is comparable to the size of...
34.
Effects of equation of state in the Standard Model on the primordial gravitational wave spectrum
Ken'ichi Saikawa
(DESY)
28/09/2017, 17:30
Cosmology & Astroparticle Physics
The existence of relic gravitational waves (GWs) is one of the most important predictions of inflationary models, and the knowledge about their detailed spectrum will become indispensable in future direct detection experiments. In this work, we investigate thermodynamic properties of high temperature plasma composed of elementary particles of the Standard Model, and identify how such...
Mr
Moritz Platscher
(Max-Planck-Institut fuer Kernphysik)
28/09/2017, 17:47
Cosmology & Astroparticle Physics
With the first detection of a gravitational wave signal in September 2015 by the LIGO collaboration, a new era in physics has begun. Gravitational wave astronomy allows us to probe the contents and properties of our Universe in a completely new manner, accessing so far inaccessible scales and phenomena.
In this talk I will present one such phenomenon, dubbed gravitational wave...
