Conveners
(T3-7) Cosmology - DTP / Cosmologie - DPT
- Arundhati Dasgupta (University of Lethbridge)
Matthew Johnson
(Y)
17/06/2014, 15:45
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
What did the Universe look like near the time of the Big Bang? What is the origin of structure in our Universe? Was there a time before the Big Bang? Precision cosmological measurements, such as those performed by the Planck satellite, have allowed us to confront some possible answers to these questions with data. In this talk, I will describe some of the current theories of the early...
Arif Babul
17/06/2014, 16:15
Theoretical Physics / Physique théorique (DTP-DPT)
Invited Speaker / Conférencier invité
Over the past 30 years, cosmologists have made dramatic advances in establishing the fundamental parameters that govern the large-scale evolution of cosmic space-time. This progress is largely the
result of experiments designed to measure the properties of the cosmic microwave background (CMB) to exquisite precision. CMB measurements, however, provide information about the state of the...
Mr
Marius Oltean
(McGill University)
17/06/2014, 16:45
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Student, In Competition) / Orale (Étudiant(e), inscrit à la compétition)
We compute the evolution of cosmological perturbations in a recently proposed Weyl-symmetric theory of two scalar fields with oppositely-signed kinetic terms and conformal couplings (in lieu of minimal coupling) to Einstein gravity. At the background level, the theory admits novel geodesically-complete cyclic cosmological solutions characterized by a brief period of repulsive gravity, or...
Dr
Eduardo Martin-Martinez
(Institute for Quantum Computing and Perimeter Institute for Theoretical Physics)
17/06/2014, 17:00
Theoretical Physics / Physique théorique (DTP-DPT)
Oral (Non-Student) / orale (non-étudiant)
By applying quantum informational and optical tools to quantum gravity theories in the very early universe, we show that the fluctuations of quantum fields as seen by late comoving observers are significantly influenced by the history of the early universe, transmitting information about the nature of the universe in timescales when quantum gravitational effects where non-negligible. This...
