Quantum Vacuum and Gravitation

02.430 (Mainz Institute for Theoretical Physics<br>Johannes Gutenberg University)


Mainz Institute for Theoretical Physics<br>Johannes Gutenberg University

Staudingerweg 9 / 2<sup>nd</sup> floor 55128 Mainz
The discovery of the accelerated expansion of the Universe confirmed the existence of dark energy in the universe which is presumably generated by a non-vanishing cosmological constant. Early attempts to link this fact to the vacuum sector of quantum field theory have failed because of the dramatic difference between the orders magnitude involved. The problem is similar to that of inflationary scenarios, where there is an increasing evidence that it is connected to quantum fluctuations and modified models of gravity. The recent discovery of the Higgs boson provides an extra support to the idea that scalar fields also play a fundamental role in Nature. There are other phenomena like Hawking radiation and inflationary mechanisms where the applications of quantum field theory to gravitation become very relevant.

The aim of the program is to analyze from a modern perspective quantum field-theoretical methods, like renormalization group and conformal anomalies, and their applications in astrophysics and cosmology with special focus on black hole physics and the study of analogue systems.
Abstracts book
Dates of Participants
Executive Summary
Preliminary Program
    • 1
      Welcome and Opening Address
    • 2
      C. Wetterich: Quantum vacuum and cosmology
    • 3
      Coffee break
    • 4
      I. Antoniadis: Scale hierarchies in particle physics and cosmology
    • 5
      P. Anderson: Particle production, backreaction, and the validity of the semiclassical approximation
    • 6
      I. Buchbinder: Quantum Equivalence of Massive Antisymmetric Tensor Field Models in Curved Space- Time
    • 7
      Lunch break
    • 8
      A. Zhitnitsky: The dynamics of the topological gauge sectors in a time-dependent curved background
    • 9
      D. Glavan: Quantum backreaction of a very light non-minimally coupled scalar and Dark Energy
    • 10
      Coffee break
    • 11
      Discussion on Inflation and Vacuum Energy
    • 12
      W. Unruh: Analog Gravity
    • 13
      Coffee break
    • 14
      A. Fabbri: Analog Hawking radiation in Bose-Einstein condensates
    • 15
      R. Schuetzhold: On the partner particles for black hole evaporation
    • 16
      S. Reynaud: Inertia of mirrors in vacuum
    • 17
      Lunch Break
    • 18
      M. Visser: Why are Casimir energy differences so often finite?
    • 19
      E. Elizalde: Zeta functions, the Chowla-Selberg formula, and the Casimir effect
    • 20
      Coffee break
    • 21
      F. Michel: Hawking radiation in the presence of high energy dispersion and application to universal horizons
    • 22
      Discussion on Analog Gravity and the Hawking Effect
    • 23
      A. Starobinsky: Inflation: present status and perspectives of future discoveries
    • 24
      Coffee break
    • 25
      R. Durrer: The Cosmic Microwave Background and Quantum Physics
    • 26
      C. Kiefer: Can effects of quantum gravity be observed in the cosmic microwave background?
    • 27
      I. Agullo: Loop quantum cosmology and the CMB
    • 28
      Lunch break
    • 29
      M. Maggiore: Dark energy and nonlocal gravity
    • 30
      P. Mazur: Model independent constraints on correlation functions in CMB and on the early galaxy distribution from CFT
    • 31
      Coffee breack
    • 32
      R. Carballo-Rubio: Using the cosmological constant to learn about spacetime
    • 33
      Discussion on Cosmological Term and Quantum Corrections in the CMB
    • 34
      V. Frolov: Non-singular models of black holes
    • 35
      Coffee break
    • 36
      E. Mottola: Dark Energy and Condensate Stars: Surface Tension and Negative Pressure in Gravitational Collapse
    • 37
      J. Serreau: Infrared dynamics of interacting scalar fields in de Sitter space
    • 38
      E. Akhmedov: On strong quantum corrections in strong background fields, in general, and in de Sitter space, in particular
    • 39
      Lunch break
    • 40
      T. Prokopec: De Sitter breaking from gravitons at the one loop level
    • 41
      D. Grumiller: Holography in flat space
    • 42
      Coffee break
    • 43
      Discussion on Quantum Effects in Gravitational Collapse and in de Sitter Space
    • 44
      M. Reuter: Functional Renormalization Group
    • 45
      Coffee break
    • 46
      A. Mazumdar: Ground State of Gravity
    • 47
      P. Lavrov: Remarks on the average effective action in Functional Renormalization Group approach
    • 48
      I. Shapiro: Renormalization and stability in higher derivative models of quantum gravity
    • 49
      Lunch break
    • 50
      D. Litim: Asymptotic safety - from gauge theories to quantum gravity
    • 51
      T. Turgut: Interacting bosons in a static background metric
    • 52
      Coffee break
    • 53
      General Discussion on Quantum Gravity and Concluding Remarks