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BEGIN:VEVENT
SUMMARY:Non-relativistic String Theory and Branes
DTSTART;VALUE=DATE-TIME:20191028T111500Z
DTEND;VALUE=DATE-TIME:20191028T120000Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-774@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Eric Bergshoeff ()\nThe aim of this talk is to descr
ibe what we can learn about basic non-relativistic brane solutions in non-
relativistic string theory from non-relativistic T-duality in the same way
that relativistic T-duality has been applied in the past to relate differ
ent relativistic brane solutions. The first part of the talk will be a rev
iew of non-relativistic string theory\, the equations of motion of the bac
kground fields and the T-duality symmetry. In the he second part of the ta
lk\, which will be more speculative\, we will discuss how we think that
non-relativistic branes fit into the picture.\n\nhttps://indico.ph.ed.ac.
uk/event/60/contributions/774/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/774/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Renormalization Group Flows of Scalar Galilean Electrodynamics in
2 + 1 Dimensions
DTSTART;VALUE=DATE-TIME:20191028T154500Z
DTEND;VALUE=DATE-TIME:20191028T163000Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-777@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Shira Chapman ()\nI will discuss the theory of Galil
ean electrodynamics coupled to a single SchrÃ¶dinger scalar in 2+1 dimensi
ons. This theory\, originally obtained from a null-reduction of relativist
ic Maxwell's theory coupled to a complex scalar field in 3+1 dimensions\,
suffers an infinite series of quantum corrections. I will explain how thes
e corrections can be handled systematically using the background field met
hod\, leading to a continuous manifold of fixed points where the non-relat
ivistic conformal symmetry is preserved.\n\nhttps://indico.ph.ed.ac.uk/eve
nt/60/contributions/777/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/777/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Entanglement measures in generalised quantum Lifshitz models
DTSTART;VALUE=DATE-TIME:20191029T143000Z
DTEND;VALUE=DATE-TIME:20191029T151500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-781@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Valentina Giangreco Puletti ()\nThe talk focusses on
the computation and analysis of entanglement measures in generalised quan
tum Lifshitz models. These are free field theories with Lifshitz scaling s
ymmetry which extend the (2+1)-dimensional quantum Lifshitz model to highe
r dimension\, and provide us with simple models for non-relativistic criti
cal theories. I will introduce various entanglement measures\, such as ent
anglement entropy and logarithmic negativity (suitable to characterising q
uantum entanglement for pure and mixed states respectively)\, outline thei
r computation in generalised quantum Lifshitz theories\, and discuss the r
esults.\n\nhttps://indico.ph.ed.ac.uk/event/60/contributions/781/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/781/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-relativistic supersymmetry on curved backgrounds
DTSTART;VALUE=DATE-TIME:20191029T154500Z
DTEND;VALUE=DATE-TIME:20191029T163000Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-782@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Jan Rosseel ()\nIn this talk\, I will briefly review
how curved Riemannian manifolds\, on which relativistic supersymmetric fi
eld theories can be defined\, are found by studying a suitable set of diff
erential Killing spinor equations. These Killing spinor equations are dete
rmined by the supersymmetry transformation rules of the fermionic fields o
f off-shell relativistic supergravity. I will then argue that one can obta
in curved Newton-Cartan backgrounds\, on which non-relativistic supersymme
tric field theories can be put\, by studying a set of non-relativistic Kil
ling spinor equations\, that include both algebraic and differential equat
ions. Finally\, some examples and properties of these curved backgrounds w
ill be discussed.\n\nhttps://indico.ph.ed.ac.uk/event/60/contributions/782
/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/782/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-relativistic Strings from Quantum Mechanics
DTSTART;VALUE=DATE-TIME:20191029T121000Z
DTEND;VALUE=DATE-TIME:20191029T125500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-780@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Troels Harmark ()\nThis talk is about a new type of
string theory with a non-relativistic conformal field theory on the world-
sheet\, as well as a non-relativistic target space geometry. Starting with
the relativistic Polyakov action with a fixed momentum along a non-compac
t null-isometry\, we can take a scaling limit that gives the non-relativis
tic string\, including an interesting intermediate step. This can in parti
cular be applied to a string on AdS5 x S5. In this case the scaling limit
realizes a limit of AdS/CFT that on the field theory side gives a quantum
mechanical theory known as Spin Matrix theory. We review that Spin Matrix
theory is a finite-N version of nearest neighbor spin chains\, from which
one can find a long-wavelength semi-classical description using sigma-mode
l such as the Landau-Lifshitz sigma-model. Hence\, we can show that both s
ides of the AdS/CFT gives\, in this limit\, equivalent non-relativistic si
gma-models that we are able to write down in a fully covariant manner\, an
d show that it has a non-relativistic local symmetry that realizes the Gal
ilean Conformal Algebra (GCA). This suggests that one has a holographic du
ality between the quantum mechanical theory of Spin Matrix theory\, and th
e non-relativistic string. This could provide a more tractable holographic
duality in which one can study the emergence of non-relativistic strings\
, geometry and gravity.\n\nhttps://indico.ph.ed.ac.uk/event/60/contributio
ns/780/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/780/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-relativistic gravity and strings
DTSTART;VALUE=DATE-TIME:20191029T111500Z
DTEND;VALUE=DATE-TIME:20191029T120000Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-779@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Niels Obers ()\nI will start by motivating the recen
t interest in non-relativistic gravity and strings\, and introduce the bas
ics of Newton-Cartan geometry.\nNewton-Cartan (NC) geometry was introduced
more than 90 years ago in order to find a geometric formulation of Newton
ian gravity. This geometry (including recent novel generalisation \nand e
xtensions) has gained renewed interest as it appears in a variety of setti
ngs in modern theory involving gravity\, string theory and holography. I w
ill then talk about recent work on an action principle for non-relativisti
c gravity\, including its Newtonian limit. This requires a new notion of N
C geometry\, which naturally arises in a covariant 1/c expansion of gener
al relativity\, with c being the speed of light. The corresponding truncat
ion of general relativity yields a non-relativistic gravity theory that go
es beyond Newtonian gravity and is able to correctly describe gravitationa
l time dilation. Finally\, I will discuss the relevance and appearance of
non-relativistic geometry in connection with non-relativistric string theo
ry and holography.\n\nhttps://indico.ph.ed.ac.uk/event/60/contributions/77
9/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/779/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Soft degrees of freedom\, Gibbons-Hawking contribution and Casimir
effect
DTSTART;VALUE=DATE-TIME:20191028T143000Z
DTEND;VALUE=DATE-TIME:20191028T151500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-776@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Glenn Barnich ()\nThe semiclassical contribution to
the partition function is obtained by evaluating the Euclidean action impr
oved through suitable boundary terms. We address the question of which deg
rees of freedom are responsible for this contribution. A physical toy mode
l for the gravitational problem is a charged vacuum capacitor. For a plan
ar charged vacuum capacitor with perfectly conducting plates\, we identify
the degrees of freedom that\, in the quantum theory\, give rise to additi
onal contributions to the standard black body result proportional to the a
rea of the plates. They allow for a microscopic derivation of the thermody
namics of the charged capacitor and contribute to the Casimir effect at fi
nite temperature and thus to the entropy.\n\nhttps://indico.ph.ed.ac.uk/ev
ent/60/contributions/776/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/776/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maximally symmetric spacetimes reconsidered
DTSTART;VALUE=DATE-TIME:20191028T121000Z
DTEND;VALUE=DATE-TIME:20191028T125500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-775@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Stefan Prohazka ()\nSpacetimes\, like Minkowski spac
e\, are omnipresent in physics. I will\nintroduce a recent classification
of spacetimes that generalizes the\nclassification of maximally symmetric
lorentzian geometries and\nincludes further physically interesting ones. A
mong them are galilean\,\ncarrollian and aristotelian geometries for which
there is renewed\ninterest due to applications in holography. These space
times posses\ninfinite dimensional (BMS-like) symmetries which we will als
o discuss.\n\nhttps://indico.ph.ed.ac.uk/event/60/contributions/775/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/775/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Oddities in non-relativistic strong gravity
DTSTART;VALUE=DATE-TIME:20191028T100000Z
DTEND;VALUE=DATE-TIME:20191028T104500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-773@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Dieter Van den Bleeken ()\nI will review the nonrela
tivisic\, or large c\, expansion of general relativity and will argue why
dynamic matter that sources strong gravitational fields requires the prese
nce of odd powers in this expansion. I will report on ongoing work constru
cting the effective non-relativistic theory including these odd terms. A n
umber of other peculiarities of the strong field\, nonrelativistic corner
of GR will be pointed out.\n\nhttps://indico.ph.ed.ac.uk/event/60/contribu
tions/773/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/773/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quantum Critical and Supersymmetric Lifshitz Field Theories
DTSTART;VALUE=DATE-TIME:20191029T100000Z
DTEND;VALUE=DATE-TIME:20191029T104500Z
DTSTAMP;VALUE=DATE-TIME:20240804T045646Z
UID:indico-contribution-60-778@indico.ph.ed.ac.uk
DESCRIPTION:Speakers: Igal Arav ()\nI will discuss non-boost-invariant fie
ld theories with "time domain" supersymmetry\, in which the supersymmetric
algebra closes on the Hamiltonian alone. I will briefly review the N=1 (t
wo real supercharges) construction\, and then introduce an N=2 family of f
ield theories with four real supercharges and a holomorphic structure. I w
ill show how this relatively simple construction exhibits some surprising
properties: Mainly\, the marginal subcases realize lines of quantum exact\
, interacting Lifshitz fixed points with vanishing beta functions in vario
us space dimensions. Additionally\, these theories enjoy a rich moduli spa
ce of vacua with spontaneously broken translation symmetry.\n\nhttps://ind
ico.ph.ed.ac.uk/event/60/contributions/778/
LOCATION:ICMS
URL:https://indico.ph.ed.ac.uk/event/60/contributions/778/
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