[Turkmath:6044] Feza Gursey Merkezinde "Dual Perspectives" konusmasi (7 Nisan Cuma)

[sadik.deger at boun.edu.tr]

Sayin liste uyeleri,

Bogazici Universitesi Kandilli kampusunde yer alan Feza Gursey Fizik ve
Matematik Arastirma Merkezinde matematikciler ile kuramsal  fizikcileri
bulusturmayi hedefledigimiz "Dual Perspectives" konusma dizisine 17 Mart
Cuma gunu detaylari asagida ve ekteki posterde yer alan konusmayla devam
ediyoruz.

Butun ilgilenenleri bekleriz,

Nihat Sadik Deger, Umut Varolgunes

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Konusma dizisinin web sayfasi: https://umutvg.github.io/dp.html

Tarih: 7 Nisan 2023, Cuma (Sabah bolumu 10:30-12:00, Oglen bolumu 13:30-15:00)

Konusmaci: Jan Rosseel, Boskovic Institute, Zagreb

Baslik: Non-Lorentzian Geometry

Ozet: Non-Lorentzian geometry refers to a differential geometric framework for
space-times with a degenerate metric structure and a local causal structure
that differs from the one of Lorentzian geometry. It has recently  found new
applications, e.g., in the study of field and gravitational theories in
non- and ultra-relativistic regimes. In the first of these two lectures, I
will provide an introduction to non-Lorentzian geometry, focusing on the
examples of Galilean and Newton-Cartan geometry that describe non-relativistic
space-times. I will discuss their metric structure and metric-compatible
affine connections with and without torsion in a frame formulation. I will
furthermore comment on the physical interpretation of these  structures and
outline differences with Lorentzian geometry.

The second lecture will focus on the appearance of non-Lorentzian geometry
in non-relativistic string theory, a consistent and UV-complete string theory
whose excitations exhibit non-relativistic dispersion relations and Newtonian
gravitational interactions. After an introduction to  non-relativistic string
theory, I will argue that its target space-time geometry is given by an
extension of Newton-Cartan geometry, called string Newton-Cartan geometry. I
will discuss the structure of string Newton- Cartan geometry and show how it
can be viewed as a particular limit of Lorentzian geometry equipped with an
extra two-form Kalb-Ramond gauge field. If time permits, I will outline how
this limit can be used to obtain effective gravitational field equations for
non-relativistic string theory and comment on T-duality in non-relativistic
string theory.

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