164 citations · 555 across the 11 of their papers we have counts for
11 papers
De Sitter Holography and Entanglement Entropy
Xi Dong, Eva Silverstein, Gonzalo Torroba
We propose a new example of entanglement knitting spacetime together, satisfying a series of checks of the corresponding von Neumann and Renyi entropies. The conjectured dual of de…
Controlled non-Fermi liquids from spacetime dependent couplings
Xi Dong, Samuel McCandlish, Eva Silverstein +1
We construct perturbatively controlled non-Fermi liquids in 3+1 spacetime dimensions, using mild power-law translation breaking interactions. Our mechanism balances the leading tre…
New solutions with accelerated expansion in string theory
Matthew Dodelson, Xi Dong, Eva Silverstein +1
We present concrete solutions with accelerated expansion in string theory, requiring a small, tractable list of stress energy sources. We explain how this construction (and others…
Moduli Stabilization and the Holographic RG for AdS and dS
Xi Dong, Bart Horn, Eva Silverstein +1
We relate moduli stabilization () in the bulk of or to basic properties of the Wilsonian effective action in the holographic dual theory on : the sin…
Perturbative Critical Behavior from Spacetime Dependent Couplings
Xi Dong, Bart Horn, Eva Silverstein +1
We find novel perturbative fixed points by introducing mildly spacetime-dependent couplings into otherwise marginal terms. In four-dimensional QFT, these are physical analogues of…
The Benefits of Stress: Resolution of the Lifshitz Singularity
Ning Bao, Xi Dong, Sarah Harrison +1
Through the AdS/CFT correspondence, Lifshitz spacetimes describe field theories with dynamical scaling (). Although curvature invariants are small, the Lifshitz metric ex…
Unitarity bounds and RG flows in time dependent quantum field theory
Xi Dong, Bart Horn, Eva Silverstein +1
We generalize unitarity bounds on operator dimensions in conformal field theory to field theories with spacetime dependent couplings. Below the energy scale of spacetime variation…
FRW solutions and holography from uplifted AdS/CFT
Xi Dong, Bart Horn, Shunji Matsuura +2
Starting from concrete AdS/CFT dual pairs, one can introduce ingredients which produce cosmological solutions, including metastable de Sitter and its decay to non-accelerating FRW.…
Stimulated superconductivity at strong coupling
Ning Bao, Xi Dong, Eva Silverstein +1
Stimulating a system with time dependent sources can enhance instabilities, thus increasing the critical temperature at which the system transitions to interesting low-temperature…
Simple exercises to flatten your potential
Xi Dong, Bart Horn, Eva Silverstein +1
We show how backreaction of the inflaton potential energy on heavy scalar fields can flatten the inflationary potential, as the heavy fields adjust to their most energetically favo…
Micromanaging de Sitter holography
Xi Dong, Bart Horn, Eva Silverstein +1
We develop tools to engineer de Sitter vacua with semi-holographic duals, using elliptic fibrations and orientifolds to uplift Freund-Rubin compactifications with CFT duals. The du…