280 citations · 409 across the 18 of their papers we have counts for
7 papers · 1 filter
Factorizing Wormholes in a Partially Disorder-Averaged SYK Model
Kanato Goto, Kenta Suzuki, Tomonori Ugajin
In this paper, we introduce a "partially disorder-averaged" SYK model. This model has a real parameter that smoothly interpolates between the ordinary totally disorder-averaged SYK…
Entanglement between two evaporating black holes
Akihiro Miyata, Tomonori Ugajin
We study a thermo-field double type entangle state on two disjoint gravitating universes, say A and B, with an eternal black hole on each. As was shown previously, its entanglement…
A comment on a fine-grained description of evaporating black holes with baby universes
Norihiro Iizuka, Akihiro Miyata, Tomonori Ugajin
We study a partially fine-grained description of an evaporating black hole by introducing an open baby universe with a boundary. Since the Page's calculation of the entropy of Hawk…
Product of Random States and Spatial (Half-)Wormholes
Kanato Goto, Yuya Kusuki, Kotaro Tamaoka +1
We study how coarse-graining procedure of an underlying UV-complete quantum gravity gives rise to a connected geometry. It has been shown, quantum entanglement plays a key role in…
Entanglement between two gravitating universes
Vijay Balasubramanian, Arjun Kar, Tomonori Ugajin
We study two disjoint universes in an entangled pure state. When only one universe contains gravity, the path integral for the Rényi entropy includes a wormhole bet…
Evaporation of black holes in flat space entangled with an auxiliary universe
Akihiro Miyata, Tomonori Ugajin
We study a thermofield double type entangled state on two disjoint universes and , where one of the universes is asymptotically flat containing a black hole. As we increase…