Triangle Seminars
Tuesday, 12 Apr 2005
Free geometry for higher spins: results and perspectives
Dario Francia
(Rome, Tor Vergata)
Wednesday, 13 Apr 2005
Free geometry for higher spins: results and perspectives
📍 London
Dario Francia
(Universita di Roma Tre)
Abstract:
The linearised curvatures of de Wit and Freedman for totally
symmetric gauge fields of any spin are shown to give rise to geometric
equations in which both fields and gauge parameters are not
constrained a priori. These equations, which are non local, reduce to
the traditional, local Fronsdal form by a suitable gauge fixing, and
on-shell degrees of freedom are just the physical ones. Developments
and generalisations of these results are discussed.
The linearised curvatures of de Wit and Freedman for totally
symmetric gauge fields of any spin are shown to give rise to geometric
equations in which both fields and gauge parameters are not
constrained a priori. These equations, which are non local, reduce to
the traditional, local Fronsdal form by a suitable gauge fixing, and
on-shell degrees of freedom are just the physical ones. Developments
and generalisations of these results are discussed.
Posted by: KCL
Thursday, 14 Apr 2005
Twistors and Gauge Theory
David Kosower
(SPhT Saclay)
Quantum fluctuations of rotating strings in AdS5xS5
Yuji Satoh
(Tsukuba/Imperial)
Abstract:
We discuss quantum fluctuations of a class of rotating strings in AdS5xS5. In particular, we develop a systematic method to compute the one-loop sigma-model effective actions in closed forms for large angular momenta. As examples, we explicitly evaluate the leading terms for the constant radii strings in the SO(6) sector with two equal angular momenta, the SU(2) sector, and the SL(2) sector. We also obtain the leading quantum corrections to the space-time energy for these sectors.
We discuss quantum fluctuations of a class of rotating strings in AdS5xS5. In particular, we develop a systematic method to compute the one-loop sigma-model effective actions in closed forms for large angular momenta. As examples, we explicitly evaluate the leading terms for the constant radii strings in the SO(6) sector with two equal angular momenta, the SU(2) sector, and the SL(2) sector. We also obtain the leading quantum corrections to the space-time energy for these sectors.
Posted by: IC