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42 papers · 1 filter
Scalar heat kernel with boundary in the worldline formalism
Fiorenzo Bastianelli, Olindo Corradini, Pablo A. G. Pisani +1
The worldline formalism has in recent years emerged as a powerful tool for the computation of effective actions and heat kernels. However, implementing nontrivial boundary conditio…
Quantum Stability for the Heisenberg Ferromagnet
Till Bargheer, Niklas Beisert, Nikolay Gromov
Highly spinning classical strings on RxS^3 are described by the Landau-Lifshitz model or equivalently by the Heisenberg ferromagnet in the thermodynamic limit. The spectrum of this…
Interacting finite-size magnons
Thomas Klose, Tristan McLoughlin
We explicitly construct a large class of finite-volume two-magnon string solutions moving on R x S^2. In particular, by making use of the relationship between the O(3) sigma model…
The Minimally Immersed 4D Supermembrane
M. P. Garcia del Moral, J. M. Pena, A. Restuccia
In this note we summarize some of the properties found in [1], and its relation with [2]. We comment on the construction of the action of the 11D supermembrane with nontrivial cent…
Entanglement Entropy, Trace Anomalies and Holography
A. Schwimmer, S. Theisen
The holographic representation of the entanglement entropy of four dimensional conformal field theories is studied. By generalizing the replica trick the anomalous terms in the ent…
Nonperturbative SL(2,Z) (p,q)-strings manifestly realized on the quantum M2
M. P. Garcia del Moral, I. Martin, A. Restuccia
The SL(2,Z) duality symmetry of IIB superstring is naturally realized on the D=11 supermembrane restricted to have central charges arising from a nontrivial wrapping. This supermem…