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12 papers · 2 filters
A Note on the Geometry of CHL Heterotic Strings
W. Lerche, R. Minasian, C. Schweigert +1
We present a few remarks on disconnected components of the moduli space of heterotic string compactifications on . We show in particular how the eight dimensional CHL heteroti…
Physical Properties of Quantum Field Theory Measures
J. M. Mourao, T. Thiemann, J. M. Velhinho
Well known methods of measure theory on infinite dimensional spaces are used to study physical properties of measures relevant to quantum field theory. The difference of typical co…
Quantum Inhomogeneities in String Cosmology
A. Buonanno, K. Meissner, C. Ungarelli +1
Within two specific string cosmology scenarios --differing in the way the pre- and post-big bang phases are joined-- we compute the size and spectral slope of various types of cosm…
On the M-Theory Approach to (Compactified) 5D Field Theories
A. Brandhuber, N. Itzhaki, J. Sonnenschein +2
We construct M-theory curves associated with brane configurations of SU(N), SO(N) and 5d supersymmetric gauge theories compactified on a circle. From the curves we can acc…
Realizations of Causal Manifolds by Quantum Fields
Heinrich Saller
Quantum mechanical operators and quantum fields are interpreted as realizations of timespace manifolds. Such causal manifolds are parametrized by the classes of the positive unitar…
On the Role of the Annihilation Channel in Front Form Positronium
Uwe Trittmann
The annihilation channel is implemented into the front form calculations of the positronium spectrum presented in a previous publication. The effective Hamiltonian is calculated an…