Exceptional Flux Compactifications

Duration: 18 mins 6 secs

Share this media item:

Embed this media item:

<iframe width="_width_" height="_height_" src="https://sms.cam.ac.uk/media/1272846/embed" frameborder="0" scrolling="no" allowfullscreen></iframe>

Choose size:

About this item

Available Formats

About this item

Description:	Guarino, A (Rijksuniversiteit Groningen) Thursday 28 June 2012, 17:15-17:30


Created:	2012-07-09 14:01
Collection:	Mathematics and Applications of Branes in String and M-theory
Publisher:	Isaac Newton Institute
Copyright:	Guarino, A
Language:	eng (English)


Abstract:	In the last decade, a framework in which string dualities are implemented at the supergravity level has been developed, i.e., the so-called embedding tensor formalism. However, the connection between this formalism and string theory realisations remains still obscure since most of the supergravities obtained by using the embedding tensor formalism correspond to very exotic (non-)geometries in the string side. In this talk we consider type II flux backgrounds compatible with the absence of brane sources, and construct their explicit embedding into maximal D=4 supergravity. This enables us to investigate the critical points, mass spectra and gauge groups of such "exceptional" backgrounds in a systematic way. We will chart the landscape of vacua in some specific setups which are relevant from the string theory viewpoint and discuss the issues of stability and supersymmetry at those vacuum solutions. Finally we will point towards some natural extensions of the results.

Abstract:

In the last decade, a framework in which string dualities are implemented at the supergravity level has been developed, i.e., the so-called embedding tensor formalism. However, the connection between this formalism and string theory realisations remains still obscure since most of the supergravities obtained by using the embedding tensor formalism correspond to very exotic (non-)geometries in the string side.

In this talk we consider type II flux backgrounds compatible with the absence of brane sources, and construct their explicit embedding into maximal D=4 supergravity. This enables us to investigate the critical points, mass spectra and gauge groups of such "exceptional" backgrounds in a systematic way. We will chart the landscape of vacua in some specific setups which are relevant from the string theory viewpoint and discuss the issues of stability and supersymmetry at those vacuum solutions. Finally we will point towards some natural extensions of the results.

Available Formats

Format	Quality	Bitrate	Size
MPEG-4 Video	480x360	1.84 Mbits/sec	250.35 MB	View	Download
WebM	480x360	741.57 kbits/sec	98.40 MB	View	Download
Flash Video	480x360	567.12 kbits/sec	75.25 MB	View	Download
iPod Video	480x360	504.97 kbits/sec	67.00 MB	View	Download
QuickTime	384x288	848.45 kbits/sec	112.58 MB	View	Download
MP3	44100 Hz	125.05 kbits/sec	16.46 MB	Listen	Download
Auto *	(Allows browser to choose a format it supports)