Results 31 to 40 of about 1,593,652 (317)

Surface properties at the Kosterlitz-Thouless transition [PDF]

open access: yes, 2002
Monte Carlo simulations of the two-dimensional XY model are performed in a square geometry with free and mixed fixed-free boundary conditions. Using a Schwarz-Christoffel conformal mapping, we deduce the exponent eta of the order parameter correlation ...
Berche   +28 more
core   +1 more source

Elliptical generalized Maxwell fish-eye lens using conformal mapping

open access: yesNew Journal of Physics, 2019
A circular graded index lens is conformally transformed to an elliptical shape using a closed-form transformation. The proposed transformation is then employed to compress a Maxwell fish-eye and its generalized version.
Hossein Eskandari   +3 more
semanticscholar   +1 more source

Identifying Large Charge operators

open access: yesJournal of High Energy Physics, 2023
The Large Charge sector of Conformal Field Theory (CFT) can generically be described through a semiclassical expansion around a superfluid background. In this work, focussing on U(1) invariant Wilson-Fisher fixed points, we study the spectrum of spinning
Gil Badel   +2 more
doaj   +1 more source

OpenConMap: A Matlab toolbox for mapping the interior of the unit circle to the exterior of simple closed curves

open access: yesSoftwareX
The conformal mapping function from the interior of the complex plane's unit circle to the exterior of any simple closed curve on the real plane finds widespread applications, including the use of complex variable methods in elasticity studies.
Kai He, Kai Wang
doaj   +1 more source

Revealing topology with transformation optics

open access: yesNature Communications, 2021
Visualizing and studying topological features is becoming crucial to develop new generation topological systems. Here the authors provide the theoretical and numerical demonstration of the potential of transformation optics connecting the virtual space ...
Lizhen Lu   +5 more
doaj   +1 more source

Laplacian transfer across a rough interface: Numerical resolution in the conformal plane

open access: yes, 2005
We use a conformal mapping technique to study the Laplacian transfer across a rough interface. Natural Dirichlet or Von Neumann boundary condition are simply read by the conformal map.
Damien Vandembroucq   +9 more
core   +2 more sources

Mapping Topological to Conformal Field Theories through strange Correlators. [PDF]

open access: yesPhysical Review Letters, 2018
We extend the concept of strange correlators, defined for symmetry-protected phases in You et al. [Phys. Rev. Lett. 112, 247202 (2014)PRLTAO0031-900710.1103/PhysRevLett.112.247202], to topological phases of matter by taking the inner product between ...
R. Vanhove   +5 more
semanticscholar   +1 more source

Subtleties of nonrelativistic reduction and applications

open access: yesNuclear Physics B, 2019
Various subtleties and problems associated with nonrelativistic (NR) reduction of a scalar field theory to the Schroedinger theory are discussed. Contrary to the usual approaches that discuss the mapping among the equations of motion or the actions, we ...
Rabin Banerjee, Pradip Mukherjee
doaj   +1 more source

On geometry of hypersurfaces of a pseudoconformal space of Lorentzian signature

open access: yes, 1998
There are three types of hypersurfaces in a pseudoconformal space C^n_1 of Lorentzian signature: spacelike, timelike, and lightlike. These three types of hypersurfaces are considered in parallel.
Akivis   +12 more
core   +1 more source

Three Dimensional de Sitter Gravity and the Correspondence [PDF]

open access: yes, 2001
Certain aspects of three dimensional asymptotically de Sitter spaces are studied, with emphasis on the mapping between gravity observables and the representation of the conformal symmetry of the boundary.
A. Achúcarro   +21 more
core   +2 more sources

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