F.Lobo:The modern renaissance of traversable wormholes

Astrophysical studies makes possible to use natural cosmic objects as unique particle laboratories. Effects of new physics in cosmic rays and electromagnetic radiation, in stars and galaxies, indirect effects of dark matter , in particular, are the subjects of this topic of Forum

Moderator: Maxim Khlopov

Forum rules
Only topics, specified in the description of this forum can be posted here. Other topics will be either removed or moved to an appropriate forum.

F.Lobo:The modern renaissance of traversable wormholes

New postby Maxim Khlopov on Fri 21 Oct 2016 16:19

VIA lecture by Prof. Francisco Lobo ''The modern renaissance of traversable wormholes'' was given on 21.10.2016.
Its pdf presentation is attached and the record is in VIA library
http://viavca.in2p3.fr/francisco_lobo.html
The following questions and comments were put at it:
Shantanu: I presume this has no rotation? If so are there rotating Einstein-Rosen bridge solutions? (or does the question not make sense?) Maybe at the end of this talk or once the talk is put up you can put references to rotating wormhole solutions.
Shantanu: Were these obtained by some sort of Newman Janis transformation? (or just from first principles?)
Houri Ziaeepour: Can worm holes somehow solve the problem of information loss ?
Mandar: Is it possible to put a throat very close to what would have been event horizon. In other words how does the analysis change if you assume that the redshift function is large.
Shantanu: Just wanted to add one more reference about workmholes in alternate gravity theories. Nikodem Poplawski(who spoke in this series 2 or so years ago) has pointed out that in Einstein-Cartan gravity, where torsion leads to repulsive gravity a black hole forms a new universe on other side of event horizon and become an Einstein-Rosen bridge (reference is arXiv:0902.1994). Anyhow that was more of a comment, but thanks for the work of Bronnikov
Shantanu: Can one find observational evidence for wormholes through GW observations?
You are welcome to continue discussion of this exciting topic in replies to this post
Attachments
Lobo_VIA_2016.pdf
pdf of presentation of VIA lecture by F. Lobo
(4.87 MiB) Downloaded 178 times
[i]Хлопов Максим Юрьевич
Maxim Khlopov[/i]
User avatar
Maxim Khlopov
Administrateur du site
 
Posts: 1934
Joined: Sat 9 Aug 2008 19:42
Location: Paris


Return to ASTROPHYSICS

Who is online

Users browsing this forum: No registered users and 36 guests

cron