386 citations · 5.6k across the 175 of their papers we have counts for
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Quantum rolling tachyon
Jan Ambjorn, Romuald A. Janik
We consider the quantum treatment of the rolling tachyon background describing the decay of D-branes in the limit of weak string coupling. We focus on the propagation of an open st…
Wilson Loops in 2D Noncommutative Euclidean Gauge Theory: 1. Perturbative Expansion
J. Ambjorn, A. Dubin, Y. Makeenko
We calculate quantum averages of Wilson loops (holonomies) in gauge theories on the Euclidean noncommutative plane, using a path-integral representation of the star-product. We sho…
The Geometry of ZZ-branes
J. Ambjorn, S. Arianos, J. A. Gesser +1
We show how non-compact (quantum 2d AdS) space-time emerges for specific ratios of the square of the boundary cosmological constant to the cosmological constant in 2d Euclidean qua…
An Integrable Model with non-reducible three particle R-Matrix
J. Ambjorn, Sh. Khachatryan, A. Sedrakyan
We define an integrable lattice model which, in the notation of Yang, in addition to the conventional 2-particle -matrices also contains non-reducible 3-particle -matrices. T…
Non-Commutativity of the Zero Chemical Potential Limit and the Thermodynamic Limit in Finite Density Systems
Jan Ambjorn, Konstantinos N. Anagnostopoulos, Jun Nishimura +1
Monte Carlo simulations of finite density systems are often plagued by the complex action problem. We point out that there exists certain non-commutativity in the zero chemical pot…