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pro vyhledávání: '"Aspinwall, Paul S."'
Autor:
Aspinwall, Paul S.
The symmetric spaces that appear as moduli spaces in string theory and supergravity can be decomposed with explicit metrics using parabolic subgroups. The resulting isometry between the original moduli space and this decomposition can be used to find
Externí odkaz:
http://arxiv.org/abs/2407.20862
Autor:
Aspinwall, Paul S.
A very quick introduction to the bosonic string, conformal field theory, the superstring and geometry. No background in quantum field theory is assumed and the omissions are vast. Based on four lectures at the 2024 Physical Mathematics of Quantum Fie
Externí odkaz:
http://arxiv.org/abs/2407.06856
We analyze the locus, together with multiplicities, of "bad" conformal field theories in the compactified moduli space of N=(2,2) superconformal field theories in the context of the generalization of the Batyrev mirror construction using the gauged l
Externí odkaz:
http://arxiv.org/abs/1702.04661
Autor:
Aspinwall, Paul S., Plesser, M. Ronen
We carefully analyze the conditions for an abelian gauged linear sigma-model to exhibit nontrivial IR behavior described by a nonsingular superconformal field theory determining a superstring vacuum. This is done without reference to a geometric phas
Externí odkaz:
http://arxiv.org/abs/1507.00301
Autor:
Aspinwall, Paul S.
An exoflop occurs in the gauged linear $\sigma$-model by varying the Kahler form so that a subspace appears to shrink to a point and then reemerge "outside" the original manifold. This occurs for K3 surfaces where a rational curve is "flopped" from i
Externí odkaz:
http://arxiv.org/abs/1412.0612
Autor:
Aspinwall, Paul S., Gaines, Benjamin
We compare the count of (0,2)-deformation moduli fields for N=(2,2) conformal field theories on orbifolds and sigma-models on resolutions of the orbifold. The latter involves counting deformations of the tangent sheaf. We see there is generally a dis
Externí odkaz:
http://arxiv.org/abs/1404.7802
Autor:
Addington, Nicolas, Aspinwall, Paul S.
Publikováno v:
J. High Energy Phys. 7(176):39pp., 2013
In analogy with the physical concept of a massless D-brane, we define a notion of "Q-masslessness" for objects in the derived category. This is defined in terms of monodromy around singularities in the stringy Kahler moduli space and is relatively ea
Externí odkaz:
http://arxiv.org/abs/1305.5767
Autor:
Aspinwall, Paul S.
We present a local computation of deformations of the tangent bundle for a resolved orbifold singularity C^d/G. These correspond to (0,2)-deformations of (2,2)-theories. A McKay-like correspondence is found predicting the dimension of the space of fi
Externí odkaz:
http://arxiv.org/abs/1110.2524
Autor:
Aspinwall, Paul S., Plesser, M. Ronen
We compute the spectrum of massless gauge singlets in some heterotic string compactifications using Landau-Ginzburg, orbifold and non-linear sigma-model methods. This probes the worldsheet instanton corrections to the quadratic terms in the spacetime
Externí odkaz:
http://arxiv.org/abs/1106.2998
We enumerate massless E6 singlets for (0,2)-compactifications of the heterotic string on a Calabi-Yau threefold with the "standard embedding" in three distinct ways. In the large radius limit of the threefold, these singlets count deformations of the
Externí odkaz:
http://arxiv.org/abs/1008.2156