Monday, January 23 |
07:00 - 08:45 |
Breakfast ↓ Breakfast is served daily between 7 and 9am in the Vistas Dining Room, the top floor of the Sally Borden Building. (Vistas Dining Room) |
08:45 - 09:00 |
Introduction and Welcome by BIRS Station Manager (TCPL 201) |
09:00 - 10:00 |
Olaf Hohm: Background Independence vs. Duality Invariance at Order alpha' ↓ I show that in bosonic string theory there is a conflict at
first order in alpha' between manifest background independence and
manifest T-duality invariance in terms of the standard massless fields,
metric, b-field and dilaton. A double field theory formulation
of the bosonic string nevertheless exists in terms of an
\alpha'-deformed frame or vielbein formalism. (TCPL 201) |
10:00 - 10:30 |
Coffee Break (TCPL Foyer) |
10:30 - 11:30 |
Diego Marqués: The Odd story of alpha-prime corrections ↓ I will review higher-derivative extensions of Double Field Theories that encompass the first order corrections to the heterotic and bosonic strings in a unified framework. I will then explore applications of the formalism, with emphasis on how to compute higher-derivative corrections to gauged supergravities through generalized Scherk-Schwarz compactifications. (TCPL 201) |
11:30 - 13:00 |
Lunch (Vistas Dining Room) |
13:00 - 14:00 |
Guided Tour of The Banff Centre ↓ Meet in the Corbett Hall Lounge for a guided tour of The Banff Centre campus. (Corbett Hall Lounge (CH 2110)) |
14:00 - 14:20 |
Group Photo ↓ Meet in foyer of TCPL to participate in the BIRS group photo. The photograph will be taken outdoors, so dress appropriately for the weather. Please don't be late, or you might not be in the official group photo! (TCPL Foyer) |
14:30 - 15:30 |
Jeong-Hyuck Park: Green-Schwarz superstring and Stringy Gravity in doubled-yet-gauged spacetime ↓ World-sheet superstring and target-spacetime supergravities have been fully reformulated and generalized in doubled-yet-gauged coordinates. DFT appears as a string theory extension of, and possibly an alternative to, Einstein gravity. I will review my related recent works (1606.09307, 1609.04265), which in particular includes a `uroboros' solution to the dark matter problem. (TCPL 201) |
15:30 - 16:00 |
Coffee Break (TCPL Foyer) |
16:00 - 17:00 |
Igor Bandos: Underlying 11D EFT: A conjecture ↓ Recently proposed exceptional field theories (EFTs) making
manifest the duality En(n) symmetry, first observed as
nonlinearly realized symmetries of the maximal d=3,4,...,9
supergravity (n=11−d) and containing 11D and type IIB supergravity
as sectors, were formulated in enlarged spacetimes. In the case of
E7(7) EFT such an enlarged spacetime can be identified with the
bosonic body of the d=4 central charge superspace
Σ(60|32), the N=8 d=4 superspace completed by
56 additional bosonic coordinates associated to central charges of the
maximal d=4 supersymmetry algebra.
In this talk we show how the hypothesis on the relation of all
the known En(n) EFTs, inclusing n=8, with supersymmetry leads
to the conjecture on existence of 11D exceptional field theory
living in 11D tensorial central charge superspace Σ(528|32)
and underlying all the En(n) EFTs with n=2,...,8, and probably
the double field theory (DFT). We conjecture the possible form of the
section conditions of such an 11D EFT and show that quite generic
solutions of these can be generated by superparticle models the ground
states of which preserve from one half to all but one supersymmetry.
The properties of these superparticle models are briefly discussed. We
argue that, upon quantization, their quantum states should describe
free massless non-conformal higher spin fields in D=11. (TCPL 201) |
17:30 - 19:30 |
Dinner ↓ A buffet dinner is served daily between 5:30pm and 7:30pm in the Vistas Dining Room, the top floor of the Sally Borden Building. (Vistas Dining Room) |