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Trirefringence and the M5-brane
Igor Bandos, Kurt Lechner, Dmitri Sorokin +1
The Hamiltonian formulation for nonlinear chiral 2-form electrodynamics in six-dimensional Minkowski spacetime is used to show that small-amplitude plane-wave perturbations of a ge…
Nonlinear Electrodynamics without Birefringence
Jorge G. Russo, Paul K. Townsend
All solutions of the no-birefringence conditions for nonlinear electrodynamics are found. In addition to the known Born-Infeld and Plebanski cases, we find a ``reverse Born-Infeld'…
On chiral bosons in 2D and 6D
Luca Mezincescu, Paul K. Townsend
In the Hamiltonian formulation of chiral 2k-form electrodynamics, the 2k-form potential on the (4k+1)-space is defined up to the addition of either (i) a closed -form or (ii) a…
A dilaton-axion model for string cosmology
J. G. Russo, P. K. Townsend
The generic scale-invariant theory of an axion and a dilaton coupled to gravity in -dimensions is generalized to a `universal' one-axion model with two dilatons that reproduces…
Aether, Dark Energy, and String Compactifications
Paul K. Townsend
The 19th century Aether died with Special Relativity but was resurrected by General Relativity in the form of dark energy; a tensile material with tension equal to its energy densi…
ModMax meets Susy
Igor Bandos, Kurt Lechner, Dmitri Sorokin +1
We give a prescription for N=1 supersymmetrization of any (four-dimensional) nonlinear electrodynamics theory with a Lagrangian density satisfying a convexity condition that we rel…