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Article overview
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Hairy Black Holes in a Box | | Pallab Basu
; Chethan Krishnan
; P. N. Bala Subramanian
; | | Date: |
5 Sep 2016 | | Abstract: | We do a systematic study of the phases of gravity coupled to an
electromagnetic field and charged scalar in flat space, with box boundary
conditions. The scalar-less box has previously been investigated by Braden,
Brown, Whiting and York (and others) before AdS/CFT and we elaborate and extend
their results in a language more familiar from holography. The phase diagram of
the system is analogous to that of AdS black holes, but we emphasize the
differences and explain their origin. Once the scalar is added, we show that
the system admits both boson stars as well as hairy black holes as solutions,
providing yet another way to evade flat space no-hair theorems. Furthermore
both these solutions can exist as stable phases in regions of the phase
diagram. The final picture of the phases that emerges is strikingly similar to
that found recently for holographic superconductors in global AdS, arXiv:
1602.07211. Our construction lays bare certain previously unnoticed subtleties
associated to the definition quasi-local charges for gravitating scalar fields
in finite regions. | | Source: | arXiv, 1609.1208 | | Services: | Forum | Review | PDF | Favorites | |
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