- National Institute for Subatomic PhysicsNL871 papers
- Centre National de la Recherche ScientifiqueFR771 papers
- University of AmsterdamNL560 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT517 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR514 papers
- University of BirminghamGB502 papers
- European Organization for Nuclear ResearchCH493 papers
- Lawrence Berkeley National LaboratoryUS484 papers
- The University of Texas at AustinUS482 papers
- Indian Institute of Technology BombayIN479 papers
- The Ohio State UniversityUS473 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR467 papers
6 papers · 2 filters
Lamb Shift of Unruh Detector Levels
Bjorn Garbrecht, Tomislav Prokopec
We argue that the energy levels of an Unruh detector experience an effect similar to the Lamb shift in Quantum Electrodynamics. As a consequence, the spectrum of energy levels in a…
Reality conditions for Ashtekar gravity from Lorentz-covariant formulation
Sergei Alexandrov
We show the equivalence of the Lorentz-covariant canonical formulation considered for the Immirzi parameter to the selfdual Ashtekar gravity. We also propose to deal with the…
On the quantum origin of the seeds of cosmic structure
Alejandro Perez, Hanno Sahlmann, Daniel Sudarsky
The current understanding of the quantum origin of cosmic structure is discussed critically. We point out that in the existing treatments a transition from a symmetric quantum stat…
Counting a black hole in Lorentzian product triangulations
B. Dittrich, R. Loll
We take a step toward a nonperturbative gravitational path integral for black-hole geometries by deriving an expression for the expansion rate of null geodesic congruences in the a…
The holographic mapping of the Standard Model onto the black hole horizon, Part I: Abelian vector field, scalar field and BEH Mechanism
G. 't Hooft
Interactions between outgoing Hawking particles and ingoing matter are determined by gravitational forces and Standard Model interactions. In particular the gravitational interacti…
Timelike surfaces in Lorentz covariant loop gravity and spin foam models
Sergei Alexandrov, Zoltan Kadar
We construct a canonical formulation of general relativity for the case of a timelike foliation of spacetime. The formulation possesses explicit covariance with respect to Lorentz…