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21 papers · 2 filters
Tensor Networks from Kinematic Space
Bartlomiej Czech, Lampros Lamprou, Samuel McCandlish +1
We point out that the MERA network for the ground state of a 1+1-dimensional conformal field theory has the same structural features as kinematic space---the geometry of CFT interv…
The Two-Loop Symbol of all Multi-Regge Regions
Till Bargheer, Georgios Papathanasiou, Volker Schomerus
We study the symbol of the two-loop n-gluon MHV amplitude for all Mandelstam regions in multi-Regge kinematics in N=4 super Yang-Mills theory. While the number of distinct Mandelst…
Boost Breaking in the EFT of Inflation
Luca V. Delacretaz, Toshifumi Noumi, Leonardo Senatore
If time-translations are spontaneously broken, so are boosts. This symmetry breaking pattern can be non-linearly realized by either just the Goldstone boson of time translations, o…
Two interpretations of thin-shell instantons
Pisin Chen, Yao-Chieh Hu, Dong-han Yeom
For O(4)-symmetric instantons, there are two complementary interpretations for their analytic continuations. One is the nothing-to-something interpretation, where the initial and f…
Quantization of Spacetime Based on Spacetime Interval Operator
Hsu-Wen Chiang, Yao-Chieh Hu, Pisin Chen
Motivated by both concepts of R.J. Adler's recent work on utilizing Clifford algebra as the linear line element , and the fermionization of…
Stationary bubbles and their tunneling channels toward trivial geometry
Pisin Chen, Guillem Domènech, Misao Sasaki +1
In the path integral approach, one has to sum over all histories that start from the same initial condition in order to obtain the final condition as a superposition of histories.…