Results 61 to 70 of about 46,892 (166)

Logarithmic corrections for near-extremal Kerr-Newman Black holes

open access: yesJournal of High Energy Physics
In this paper, we computed the logarithmic corrections of entropy for the near-extremal Kerr-Newman black holes in N $$ \mathcal{N} $$ = 2 supergravity theory applying the Euclidean path integral approach in near-horizon geometry.
Ashes Modak, Aditya Singh, Binata Panda
doaj   +1 more source

Noncommutative Geometry and Path Integrals [PDF]

open access: yes, 2009
We argue that there should exist a "noncommutative Fourier transform" which should identify functions of noncommutative variables (say, of matrices of indeterminate size) and ordinary functions or measures on the space of paths. Some examples are considered.
openaire   +3 more sources

Wormholes and surface defects in rational ensemble holography

open access: yesJournal of High Energy Physics
We study wormhole contributions to the bulk path integral in holographic models which are dual to ensembles of rational free boson conformal field theories.
Joris Raeymaekers, Paolo Rossi
doaj   +1 more source

Calabi-Yau Feynman integrals in gravity: ε-factorized form for apparent singularities

open access: yesJournal of High Energy Physics
We study a recently identified four-loop Feynman integral that contains a three-dimensional Calabi-Yau geometry and contributes to the scattering of black holes in classical gravity at fifth post-Minkowskian and second self-force order (5PM 2SF) in the ...
Hjalte Frellesvig   +4 more
doaj   +1 more source

Integral-geometry characterization of photobiomodulation effects on retinal vessel morphology. [PDF]

open access: yesBiomed Opt Express, 2014
Barbosa M   +4 more
europepmc   +1 more source

THE IDENTIFICATION OF THE BOUNDARY GEOMETRY WITH CORNER POINTS IN INVERSE TWO-DIMENSIONAL POTENTIAL PROBLEMS

open access: yesTASK Quarterly, 2002
The paper presents fragment of a larger study concerning the effective methods of solving the inverse boundary value problems. The boundary value problem described here is formulated as a problem of the identification of a boundary geometry with corner ...
EUGENIUSZ ZIENIUK, WIESŁAW GABREL
doaj  

A solution of 3D Helmholtz equation for boundary geometry modeled by Coons patches using the Parametric Integral Equation System

open access: yesArchives of Acoustics, 2014
In this paper, the authors propose an algorithm for numerical solution of the 3D Helmholtz equation using the Parametric Integral Equation System (PIES). The PIES, unlike the traditional Boundary Integral Equation (BIE), is characterized by the fact that
E. ZIENIUK, K. SZERSZEŃ
doaj  

Tropological sigma models

open access: yesJournal of High Energy Physics
With the use of mathematical techniques of tropical geometry, it was shown by Mikhalkin some twenty years ago that certain Gromov-Witten invariants associated with topological quantum field theories of pseudoholomorphic maps can be computed by going to ...
Emil Albrychiewicz   +3 more
doaj   +1 more source

Sulla misurabilità della famiglia dei sistemi di cilindro parabolico, punto e piano in A_3

open access: yesLe Matematiche, 1996
The family of systems of parabolic cylinder, point and plane in A_3, proves to be measurable.
Giulio Santoro
doaj  

Sulla misurabilità della famiglia dei sistemi formati da cono quadrico e retta in A_3

open access: yesLe Matematiche, 1996
The family of systems of quadric cone and straith line, in A_3, proves to be measurable.
Silvia Imposimato
doaj  

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