Alexandria Digital Research Library

Towards a Nonviolent Alternative for the Black Hole Information Paradox

Author:
Shi, Yinbo
Degree Grantor:
University of California, Santa Barbara. Physics
Degree Supervisor:
Steven B. Giddings
Place of Publication:
[Santa Barbara, Calif.]
Publisher:
University of California, Santa Barbara
Creation Date:
2015
Issued Date:
2015
Topics:
Physics, Quantum
Keywords:
General relativity
Qft
Effective field theory
Quantum gravity
Genres:
Online resources and Dissertations, Academic
Dissertation:
Ph.D.--University of California, Santa Barbara, 2015
Description:

In the semiclassical approximation, quantum field theory suggests that black holes eventually evaporate in a manner largely independent of their internal structure. Doing so, however, leads to a violation of unitarity of quantum mechanics, rendering the system inconsistent. One possible resolution is soft violations of locality in the near horizon region. The first consistency check is whether such a proposal can actually get the information out. Using quantum information techniques, a large class of evolutions into paired states is ruled out. More generally, information transfer can be characterized by the mutual information of a specially prepared state. Minimizing this quantity saturates a subadditivity inequality, leading to "subspace transfer"; maximizing it generically leads to an enhanced particle flux. Using the tools of effective field theory, one can then try to model the nonlocality as arising from an effective source localized near the horizon. To get information out at the right rate, this source must have a characteristic size. The horizon is altered, but nonviolent. This model also naturally accommodates black hole mining, avoiding a potential flaw. Having passed important consistency checks, nonviolent nonlocality is a viable solution to the information paradox.

Physical Description:
1 online resource (102 pages)
Format:
Text
Collection(s):
UCSB electronic theses and dissertations
ARK:
ark:/48907/f30p0x6j
ISBN:
9781321696882
Catalog System Number:
990045119630203776
Rights:
Inc.icon only.dark In Copyright
Copyright Holder:
Yinbo Shi
File Description
Access: Public access
Shi_ucsb_0035D_12541.pdf pdf (Portable Document Format)