Research topics in our group

Quantum field theory in curved spacetimes

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Quantum field theory in curved spacetime (QFTCS) is the theory of quantum fields propagating in a background,classical, curved spacetime. On account of its classical treatment of the metric, QFTCS cannot be a fundamental theory of nature. However, QFTCS is expected to provide an accurate description of quantum phenomena in a regime where the effects of curved spacetime may be significant, but effects of quantum gravity itself may be neglected. In particular, it is expected that QFTCS should be applicable to the description of quantum phenomena occurring in the early universe and near (and inside of) black holes—provided that one does not attempt to describe phenomena occurring so near to singularities that curvatures reach Planckian scales and the quantum nature of the spacetime metric would have to be taken into account. Quantum field theory in curved spacetimes has provided important physical insights into the quantum nature of black holes, indicating that they should, if left alone, gradually evaporate due to the emission of quanta whose energies are distributed thermally at the famous Hawking temperature. … more information

 

Gravity in higher spacetime dimensions

Courtesy NASA/JPL-Caltech.

Courtesy NASA/JPL-Caltech.

Dimensionality plays an important role in physical systems. For example, one can build and study systems that are effectively of a lower dimension, such as “wires”, or “interfaces”, or one can study theoretical models in various dimensions. Apart from studying such systems, one can also speculate whether our spacetime dimension is, at a fundamental level, really 4-dimensional. In the context of general relativity, spacetime geometry is thought of as the realization of gravity, so the question is whether higher dimensional gravity theories could play a role in Nature… more information

Lattice Quantum Chromodynamics

coming soon…

Gauge Theories and Integrability

coming soon…