786 citations
- Princeton UniversityUS23 papers
- Albert Einstein College of MedicineUS9 papers
- Case Western Reserve UniversityUS8 papers
- Rutgers, The State University of New JerseyUS7 papers
- University of California, BerkeleyUS7 papers
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- University of Wisconsin–MadisonUS6 papers
- Leiden UniversityNL5 papers
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- Center for Astrophysics Harvard & SmithsonianUS4 papers
- Centre de Recherche Astrophysique de LyonFR4 papers
6 papers · 2 filters
Formation of Non-Abelian Monopoles Connected by Strings
Yifung Ng, T. W. B. Kibble, Tanmay Vachaspati
We study the formation of monopoles and strings in a model where SU(3) is spontaneously broken to U(2)=[SU(2)\times U(1)]/\ZZ_2, and then to U(1). The first symmetry breaking gener…
Chiral Algebras of (0,2) Sigma Models: Beyond Perturbation Theory - II
Meng-Chwan Tan, Junya Yagi
We extend our analysis in [arXiv:0801.4782] and show that the chiral algebras of (0,2) sigma models are totally trivialized by worldsheet instantons for all complete flag manifolds…
Cosmology of the closed string tachyon
Ian Swanson
The spacetime physics of bulk closed string tachyon condensation is studied at the level of a two-derivative effective action. We derive the unique perturbative tachyon potential c…
Creating kinks from particles
Sourish Dutta, D. A. Steer, Tanmay Vachaspati
We study the creation of solitons from particles, using the model as a prototype. We consider the scattering of small, identical, wave pulses, that are equivalent to a seque…
Explicit Cancellation of Triangles in One-loop Gravity Amplitudes
N. E. J. Bjerrum-Bohr, Pierre Vanhove
We analyse one-loop graviton amplitudes in the field theory limit of a genus-one string theory computation. The considered amplitudes can be dimensionally reduced to lower dimensio…
Chiral Algebras of (0,2) Sigma Models: Beyond Perturbation Theory
Meng-Chwan Tan, Junya Yagi
We explore the nonperturbative aspects of the chiral algebras of N = (0,2) sigma models, which perturbatively are intimately related to the theory of chiral differential operators…