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Central charges of 𝒩 = 2 superconformal field theories in four dimensions
We present a general method for computing the central charges a and c of N=2 superconformal field theories corresponding to singular points in the moduli space of N=2 gauge theories. Our method
Geometric Phases in Physics
During the last few years, considerable interest has been focused on the phase that waves accumulate when the equations governing the waves vary slowly. The recent flurry of activity was set off by a
Geometry of self-propulsion at low Reynolds number
The problem of swimming at low Reynolds number is formulated in terms of a gauge field on the space of shapes. Effective methods for computing this field, by solving a linear boundary-value problem,
BPS Structure of Argyres-Douglas Superconformal Theories
We study geometric engineering of Argyres–Douglas superconformal theories realized by type IIB strings propagating in singular Calabi–Yau threefolds. We use this construction to count the degeneracy
Classical time crystals.
TLDR
This work considers the possibility that classical dynamical systems display motion in their lowest-energy state, forming a time analogue of crystalline spatial order, and exhibits models of that kind, including a model with traveling density waves.
Efficiencies of self-propulsion at low Reynolds number
We study the effeciencies of swimming motions due to small deformations of spherical and cylindrical bodies at low Reynolds number. A notion of efficiency is defined and used to determine optimal
LIMITATIONS ON THE STATISTICAL DESCRIPTION OF BLACK HOLES
We argue that the description of a block hole as a statistical (thermal) object must break down as the extreme (zero-temperature) limit is a approached, due to uncontrollable thermodynamic
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