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7 papers · 2 filters
Non-perturbative 3d Lorentzian Quantum Gravity
J. Ambjorn, J. Jurkiewicz, R. Loll
We have recently introduced a discrete model of Lorentzian quantum gravity, given as a regularized non-perturbative state sum over simplicial Lorentzian space-times, each possessin…
String Fluctuations, AdS/CFT and the Soft Pomeron Intercept
Romuald A. Janik
We study high energy scattering amplitudes in a strongly coupled (confining) gauge theory using the AdS/CFT correspondence. The scattering described by a Wilson line/loop correlati…
Towards the matrix model of M-theory on a lattice
R. A. Janik, J. Wosiek
The Wilson discretization of the dimensionally reduced supersymmetric Yang-Mills theory is constructed. This gives a lattice version of the matrix model of M-theory. An SU(2) model…
Minimal surfaces and Reggeization in the AdS/CFT correspondence
R. A. Janik, R. Peschanski
We address the problem of computing scattering amplitudes related to the correlation function of two Wilson lines and/or loops elongated along light-cone directions in strongly cou…
A non-perturbative Lorentzian path integral for gravity
J. Ambjorn, J. Jurkiewicz, R. Loll
A well-defined regularized path integral for Lorentzian quantum gravity in three and four dimensions is constructed, given in terms of a sum over dynamically triangulated causal sp…
Lorentzian and Euclidean Quantum Gravity - Analytical and Numerical Results
J. Ambjorn, J. Jurkiewicz, R. Loll
We review some recent attempts to extract information about the nature of quantum gravity, with and without matter, by quantum field theoretical methods. More specifically, we work…