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Spontaneous Lorentz Breaking at High Energies
Hsin-Chia Cheng, Markus A. Luty, Shinji Mukohyama +1
Theories that spontaneously break Lorentz invariance also violate diffeomorphism symmetries, implying the existence of extra degrees of freedom and modifications of gravity. In the…
Ghost Condensation and a Consistent Infrared Modification of Gravity
Nima Arkani-Hamed, Hsin-Chia Cheng, Markus A. Luty +1
We propose a theoretically consistent modification of gravity in the infrared, which is compatible with all current experimental observations. This is an analog of Higgs mechanism…
Pseudonatural Inflation
Nima Arkani-Hamed, Hsin-Chia Cheng, Paolo Creminelli +1
We study how to obtain a sufficiently flat inflaton potential that is natural from the particle physics point of view. Supersymmetry, which is broken during inflation, cannot prote…
Extranatural Inflation
Nima Arkani-Hamed, Hsin-Chia Cheng, Paolo Creminelli +1
We present a new model of inflation in which the inflaton is the extra component of a gauge field in a 5d theory compactified on a circle. The chief merit of this model is that the…
The Standard Model in the Latticized Bulk
Hsin-Chia Cheng, Christopher T. Hill, Stefan Pokorski +1
We construct the manifestly gauge invariant effective Lagrangian in 3+1 dimensions describing the Standard Model in 4+1 dimensions, following the transverse lattice technique. We i…
Duality after Supersymmetry Breaking
Yael Shadmi, Hsin-Chia Cheng
Starting with two supersymmetric dual theories, we imagine adding a chiral perturbation that breaks supersymmetry dynamically. At low energy we then get two theories with soft supe…