# Calendar – Københavns Universitet

Mars > Calendar

• 14. september 2018, kl. 09:00

## 2nd ISBUC Annual Meeting

We invite you to join the 2nd ISBUC Annual Meeting on  14 September 2018 at 9:00 at the Victor Haderup Auditorium at Panum, Blegdamsvej 3B, 2200 Copenhagen N.  To read more about the meeting and to register click here.

• 14. september 2018, kl. 10:30-11:30

## Seminar by Yuji Sakai

Modeling of autophagosome formation

• 14. september 2018, kl. 11:15

## Quantum Optics Seminar by Jelmer Renema

Title: The hardness of boson sampling with imperfections
Jelmer Renema, University of Twente

• 14. september 2018, kl. 13:30

## Master defense by Bjarke Kofoed Reimann

Decoupling Limit and Supersymmetry of $D3$-Branes in Varying Kalb-Ramond Field Backgrounds  "This thesis deals with the Dirac-Born-Infeld action describing a $D3$-brane in the background of different Kalb-Ramond fields. In the first part the decoupling limit $l_s \rightarrow 0$ of the DBI-action is taken and shown to be equivalent to $\mathcal{N}=4$ Super Yang-Mills for constant Kalb-Ramond field. For varying Kalb-Ramond field this is hypothesised to be equivalent to $\mathcal{N}=4$ SYM with varying theta-angle and Yang-Mills coupling. An action for this is derived by dimensional reduction of Abelian six-dimensional (2,0) theory on an elliptic fibration. The two actions are then compared and shown to be inequivalent. In the second part the number of supersymmetries preserved by a $D3$-brane in different Kalb-Ramond field backgrounds is calculated. It is shown to be 1/2 BPS for zero and constant field configurations. The point charge is shown to be 1/4 BPS due to inducing a deformation of the worldsheet. Lastly a plane-wave solution to the DBI equations of motion is constructed and shown to be 1/2 BPS, lending itself to a possible future extension of the Born-Infeld gravity correspondence to a modified AdS spacetime."

• 14. september 2018, kl. 14:15

## Master Thesis Defense by David Cirauqui Garcia

Master Thesis Defense by David Cirauqui Garcia