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BEGIN:VEVENT
SUMMARY:Mass production of stable de Sitter vacua
DTSTART;VALUE=DATE-TIME:20200505T084000Z
DTEND;VALUE=DATE-TIME:20200505T092000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82438@indico.in2p3.fr
DESCRIPTION:Speakers: Renata Kallosh\nIn M-theory/string theory inspired d
=4 N=1 supergravityincluding a nilpotent multiplet (representing pseudo-ca
librated anti-Dp branes) we found a relatively simple regular procedure to
construct stable de Sitter minima in theories with many moduli and many d
ifferent Kahler potentials and superpotentials associated with M-theory\,
type IIA and type IIB string theory.\nhttps://indico.in2p3.fr/event/21349/
contributions/82438/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82438/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion: Top-down vs. bottom-up
DTSTART;VALUE=DATE-TIME:20200505T095000Z
DTEND;VALUE=DATE-TIME:20200505T110000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82437@indico.in2p3.fr
DESCRIPTION:Speakers: Renata Kallosh\, Gary Shiu\, Ivonne Zavala (Swansea
University)\, Jakob Moritz (Cornell)\, Ander Retolaza (IPhT CEA Saclay)\,
Pablo Soler\nhttps://indico.in2p3.fr/event/21349/contributions/82437/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82437/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion: Anti-branes
DTSTART;VALUE=DATE-TIME:20200505T144000Z
DTEND;VALUE=DATE-TIME:20200505T155000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82436@indico.in2p3.fr
DESCRIPTION:Speakers: Susha Parameswaran\, Vasilis Niarchos\, Iosif Bena (
IPhT\, CEA-Saclay)\, Timm Wrase\, Thomas Van Riet\nhttps://indico.in2p3.fr
/event/21349/contributions/82436/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82436/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kähler moduli stabilization from ten dimensions
DTSTART;VALUE=DATE-TIME:20200506T080000Z
DTEND;VALUE=DATE-TIME:20200506T084000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82435@indico.in2p3.fr
DESCRIPTION:Speakers: Nicolas Kovensky\nWe describe the back-reaction of g
augino condensates in supersymmetric AdS4 Type II String Theory compactifi
cations with fluxes by using generalized complex geometry. We describe the
modification of the ten-dimensional supersymmetry equations and show that
the cosmological constant prevents the cycle wrapped by the branes with g
augino condensation from shrinking to zero size. Thus\, unlike in ordinary
geometric transitions in flat space\, the volume of this cycle remains fi
nite. For D7 branes with gaugino condensation\, this gives a ten-dimension
al account of Kähler moduli stabilization. Furthermore\, by matching the
ten-dimensional supergravity solutions near and far from the cycle wrapped
by the D7 branes\, we find a relation between the size of this cycle and
the cosmological constant. This relation is almost exactly the one found b
y KKLT using 4d EFT.\nhttps://indico.in2p3.fr/event/21349/contributions/82
435/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82435/
END:VEVENT
BEGIN:VEVENT
SUMMARY:de Sitter Vacua from Ten Dimensions
DTSTART;VALUE=DATE-TIME:20200506T084000Z
DTEND;VALUE=DATE-TIME:20200506T092000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82434@indico.in2p3.fr
DESCRIPTION:Speakers: Manki Kim\nWe analyze the de Sitter construction of
KKLT using ten-dimensional supergravity\, finding exact agreement with the
four-dimensional effective theory. Starting from the fermionic couplings
in the D7-brane action\, we derive the ten-dimensional stress-energy due t
o gaugino condensation on D7-branes. We demonstrate that upon including th
is stress-energy\, as well as that due to anti-D3-branes\, the ten-dimensi
onal equations of motion require the four-dimensional curvature to take pr
ecisely the value determined by the four-dimensional effective theory of K
KLT.\nhttps://indico.in2p3.fr/event/21349/contributions/82434/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82434/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion: Gaugino condensates
DTSTART;VALUE=DATE-TIME:20200506T095000Z
DTEND;VALUE=DATE-TIME:20200506T110000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82433@indico.in2p3.fr
DESCRIPTION:Speakers: Ander Retolaza (IPhT CEA Saclay)\, Luca Martucci\, M
anki Kim\, Radu Tatar\, Nicolas Kovensky\nhttps://indico.in2p3.fr/event/21
349/contributions/82433/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82433/
END:VEVENT
BEGIN:VEVENT
SUMMARY:10d Description of 4d de Sitter Vacua
DTSTART;VALUE=DATE-TIME:20200506T122000Z
DTEND;VALUE=DATE-TIME:20200506T130000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82432@indico.in2p3.fr
DESCRIPTION:Speakers: Gary Shiu\nhttps://indico.in2p3.fr/event/21349/contr
ibutions/82432/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82432/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion: Tadpole constraints
DTSTART;VALUE=DATE-TIME:20200506T141000Z
DTEND;VALUE=DATE-TIME:20200506T152000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82431@indico.in2p3.fr
DESCRIPTION:Speakers: Andreas Braun\, Severin Lüst\, Erik Plauschinn\, Da
vid Andriot\, Mariana Grana (CEA/Saclay)\nhttps://indico.in2p3.fr/event/21
349/contributions/82431/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82431/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Constraints on dS from Higher Dimensions
DTSTART;VALUE=DATE-TIME:20200507T080000Z
DTEND;VALUE=DATE-TIME:20200507T084000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82430@indico.in2p3.fr
DESCRIPTION:Speakers: Bret Underwood\nAfter a review of some existing cons
traints on obtaining 4-dimensional de Sitter space in models with static e
xtra dimensions\, I discuss a new set of constraints\, based on the null R
aychaudhuri equation. These constraints indicate that dS spacetimes must h
ave (choose at least one): positive internal curvature\, or warping source
d by the 4-d cosmological constant\, or violate the null energy condition
pointwise everywhere in the extra dimensions. I will compare these constra
ints to previous ones and explore their application to known models of 4-d
imensional dS space with extra dimensions\, drawing lessons for future mod
el-building along the way.\nhttps://indico.in2p3.fr/event/21349/contributi
ons/82430/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82430/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Two routes to de Sitter in holography
DTSTART;VALUE=DATE-TIME:20200507T084000Z
DTEND;VALUE=DATE-TIME:20200507T092000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82429@indico.in2p3.fr
DESCRIPTION:Speakers: Francesco Nitti\nIn the context of holographic model
building\, I will discuss ways to obtain de Sitter space in four dimensio
ns which do not rely on finding a stable semiclassical vacuum solution wit
h an effective positive potential energy. In the field theory dual descrip
tion\, these de Sitter solutions can be thought of as non-vacuum states in
a (deformed) CFT and are arise due to either non-trivial sources or non
-trivial initial conditions.\nhttps://indico.in2p3.fr/event/21349/contribu
tions/82429/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82429/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion: No-go theorems
DTSTART;VALUE=DATE-TIME:20200507T095000Z
DTEND;VALUE=DATE-TIME:20200507T110000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82428@indico.in2p3.fr
DESCRIPTION:Speakers: Giuseppe Dibitetto\, Bret Underwood\, Thomas Van Rie
t\, Johan Blåbäck (CEA-Saclay)\, Mariana Grana (CEA/Saclay)\nhttps://ind
ico.in2p3.fr/event/21349/contributions/82428/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82428/
END:VEVENT
BEGIN:VEVENT
SUMMARY:A new landscape of orientifold vacua
DTSTART;VALUE=DATE-TIME:20200507T122000Z
DTEND;VALUE=DATE-TIME:20200507T130000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82427@indico.in2p3.fr
DESCRIPTION:Speakers: Jakob Moritz (Cornell)\nA consistent O3/O7 orientifo
ld of type IIB string theory is the starting point for KKLT constructions
of de Sitter vacua. I will present a vast landscape of such orientifolds t
hat descends from the famous set of complete intersection Calabi-Yau's (CI
CY). I will present distributions of topological data relevant for phenome
nology such as the splitting of Hodge numbers\, the D3 tadpole\, and multi
plicities of O3 and O7 planes. Somewhat surprisingly\, almost all of these
orientifolds have conifold singularities whose deformation branches are p
rojected out by the orientifolding. However\, they can be resolved\, so mo
st of the orientifolds actually descend from a much larger and possibly ne
w set of CY threefolds that can reached from the CICYs via conifold transi
tions. Finally\, we observe an interesting class of N=1 geometric transiti
ons involving colliding O-planes similar to another class that has previou
sly been described in the literature.\nhttps://indico.in2p3.fr/event/21349
/contributions/82427/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82427/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Solving Global Optimisation Problems
DTSTART;VALUE=DATE-TIME:20200507T130000Z
DTEND;VALUE=DATE-TIME:20200507T134000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82426@indico.in2p3.fr
DESCRIPTION:Speakers: Johan Blåbäck (CEA-Saclay)\nWhen answers are diffi
cult to come by via analytical means\, they still\nmay be possible to find
by formulating it as an optimisation problem and\nfinding numerical solut
ions. I will talk about evolutionary computing\nalgorithms\, differential
evolution in particular\, and demonstrate how it\ncan be used to answer qu
estions related to the landscape/swampland. I\nwill recommend software and
mention design strategies so that anyone can\nstart applying these method
s themselves.\nhttps://indico.in2p3.fr/event/21349/contributions/82426/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82426/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Closing discussion
DTSTART;VALUE=DATE-TIME:20200507T141000Z
DTEND;VALUE=DATE-TIME:20200507T152000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82425@indico.in2p3.fr
DESCRIPTION:Speakers: Elias Kiritsis (UoC and APC)\, Emilian Dudas (Ecole
Polytechnique)\, Renata Kallosh\, Iosif Bena (IPhT\, CEA-Saclay)\, Giusepp
e Dibitetto\nhttps://indico.in2p3.fr/event/21349/contributions/82425/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82425/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anti-branes in the blackfold approach
DTSTART;VALUE=DATE-TIME:20200505T130000Z
DTEND;VALUE=DATE-TIME:20200505T134000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82424@indico.in2p3.fr
DESCRIPTION:Speakers: Vasilis Niarchos\nI will give a brief review of the
blackfold formalism which provides an approximate analytic method to obtai
n black hole solutions and their thermodynamic properties in gravity\, inc
luding supergravity theories relevent to string theory. Subsequently\, I w
ill discuss a recent application of the method to analyze anti-D3-branes a
t the tip of the Klebanov-Strassler throat\, which enables to examine how
temperature affects the conjectured meta-stable state. Moreover\, these re
sults connect in the extremal limit to those of Kachru-Pearson-Verlinde in
a regime that was previously inaccesible. The results are remarkably con
sistent with complementary analysis of backreacted solutions. I will also
summarize corresponding results for anti M2-branes in the eleven-dimension
al Cvetic-Gibbons-Lu-Pope supergravity background.\nhttps://indico.in2p3.f
r/event/21349/contributions/82424/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82424/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anti-brane do you even lift?
DTSTART;VALUE=DATE-TIME:20200505T122000Z
DTEND;VALUE=DATE-TIME:20200505T130000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82423@indico.in2p3.fr
DESCRIPTION:Speakers: Thomas Van Riet\nI will discuss several issues conce
rning the uplifting procedure of KKLT that have been discussed over the la
st year. Ranging from the stability with respect to brane-flux decay\, to
flattening effects when moduli stabilisation is included. I will try to co
nvey the message that we are far from a proper understanding of whether dS
uplifting can be achieved.\nhttps://indico.in2p3.fr/event/21349/contribut
ions/82423/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82423/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-supersymmetric D-branes
DTSTART;VALUE=DATE-TIME:20200505T080000Z
DTEND;VALUE=DATE-TIME:20200505T084000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82422@indico.in2p3.fr
DESCRIPTION:Speakers: Timm Wrase\nAfter some general comments about the se
arch for dS vacua in string theory\, I will discuss non-supersymmetric D-b
ranes in flux compactifications. In recent years we have obtained an impro
ved understanding of these interesting ingredients in string compactificat
ions. In particular\, anti-D-branes play a crucial role in many constructi
ons of dS vacua in string theory and there is the hope that by studying mo
re general non-supersymmetric brane setups we can learn something about a
so far unexplored part of the landscape.\nhttps://indico.in2p3.fr/event/21
349/contributions/82422/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82422/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Uplifting Runaways and the Tadpole Problem
DTSTART;VALUE=DATE-TIME:20200506T130000Z
DTEND;VALUE=DATE-TIME:20200506T134000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82421@indico.in2p3.fr
DESCRIPTION:Speakers: Severin Lüst\nI will discuss a mechanism which can
lead to a possible instability of the KKLT construction for de Sitter vacu
a. The sphere at the tip of a warped deformed conifold throat can be desta
bilized by antibranes placed in the throat. Consequently\, the stabilizati
on of moduli should not be treated independently from the antibrane uplift
in KKLT-like scenarios. A similar bound can be found for numerically cons
tructed Klebanov-Strassler black holes.\nThis conifold destabilization mec
hanism can be avoided by turning on a large amount of flux on the sphere\,
but tadpole cancelation constraints the hierarchy of scales in a type IIB
flux compactification. Even though sufficiently large tadpole bounds can
be realized in string theory\, they always come at the expense of a large
number of moduli. The stabilization of these moduli by fluxes contributes
to the tadpole condition as well\, reducing the maximal flux on the KS-thr
oat. I will discuss this problem for the example of M-theory on K3 x K3.\n
https://indico.in2p3.fr/event/21349/contributions/82421/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82421/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The boundaries of KKLT
DTSTART;VALUE=DATE-TIME:20200505T141000Z
DTEND;VALUE=DATE-TIME:20200505T144000Z
DTSTAMP;VALUE=DATE-TIME:20211023T154000Z
UID:indico-contribution-82420@indico.in2p3.fr
DESCRIPTION:Speakers: Lisa Randall\nhttps://indico.in2p3.fr/event/21349/co
ntributions/82420/
LOCATION:Amphitheater Claude Bloch (IPhT\, CEA/Saclay\, France)
URL:https://indico.in2p3.fr/event/21349/contributions/82420/
END:VEVENT
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