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Tropical QFT and the sine-Gordon model
Michael Borinsky, Jury Radkovski, Suriyah Rajalingam Kannagi
A tropical quantum field theory is an exactly solvable deformation limit of an ordinary QFT, governed by a non-linear partial differential equation. We use the integrable two-dimen…
Space- vs Time-dependence in taming the infrared instability of projectable Hořava Gravity
Shinji Mukohyama, Jury Radkovski, Sergey Sibiryakov
Minkowski spacetime exhibits infrared instability in projectable Ho\v rava gravity in (3+1) dimensions. To be phenomenologically viable, the instability should be either hidden by…
A bulk model for dissipation and fixing EFT equations on its boundary
A. Besharat, L. Lehner, J. Radkovski
Effective field theories (EFTs) with higher derivatives often yield equations of motion that define ill-posed problems. We present an action-based approach that supplements a recen…