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Showing 2015 · hep-thShow all
3 papers · 2 filters
hep-th2015★ 195 cited
Dynamics of Perturbations in Double Field Theory & Non-Relativistic String Theory
Sung Moon Ko, Charles Melby-Thompson, Rene Meyer +1
Double Field Theory provides a geometric framework capable of describing string theory backgrounds that cannot be understood purely in terms of Riemannian geometry -- not only glob…
hep-th2015★ 23 cited
Towards a Solution of the Negative Mode Problem in Quantum Tunnelling with Gravity
Michael Koehn, George Lavrelashvili, Jean-Luc Lehners
In the absence of gravity, one can prove that tunnelling instantons exhibit exactly one negative mode in their spectrum of fluctuations. It is precisely the existence of this tunne…
hep-th2015★ 18 cited
Singular Behavior of the Laplace Operator in Polar Spherical Coordinates and Some of Its Consequences for the Radial Wave Function at the Origin of Coordinates
Anzor Khelashvili, Teimuraz Nadareishvili
Singular behavior of the Laplace operator in spherical coordinates is investigated. It is shown that in course of transition to the reduced radial wave function in the Schrodinger…