Doktorsvörn í kennilegri eðlisfræði frá Háskóla Íslands
Íslenska stærðfræðafélagið
Doktorsv�rn � kennilegri e�lisfr��i fr� H�sk�la �slands.
Svarthol og �yngdarfr��ileg heilmyndun.
F�studaginn 6. �g�st fer fram doktorsv�rn vi� raunv�sindadeild
H�sk�la �slands. �� ver Erling J�hann Brynj�lfsson e�lisfr��ingur
doktorsritger� s�na Svarthol og �yngdarfr��ileg heilmyndun (e. Black
hole thermodynamics and non-relativistic holography). Andm�lendur eru
Dr. Esko Keski-Vakkuri, fr� h�sk�lanum � Helsinki og Dr. Niels Obers,
fr� Niels Bohr stofnuninni � Kaupmannah�fn. Lei�beinandi Erlings �
doktorsn�mi var L�rus Thorlacius, pr�fessor vi� H�sk�la �slands og
forst��uma�ur NORDITA, Norr�nu ranns�knarstofnuninnar � kennilegri
e�lisfr��i, � Stokkh�lmi.
Gu�mundur G. Haraldsson forseti raunv�sindadeildar stj�rnar
ath�fninni sem fer fram � stofu N-132 � �skju og hefst kl. 14:00.
Doktorsritger�in er � svi�i kennilegrar e�lisfr��i og skiptist � tvo
hluta.
Fyrri hlutinn fjallar um varmafr��i svarthola og var unninn �
samstarfi vi� L�rus Thorlacius. L�st er n�rri lei� til a� reikna �t
hitastig varmageislunar sem athugandi � frj�lsu falli utan vi�
svarthol m�lir, en sl�kir �treikningar eru erfi�ir � framkv�mdme�
hef�bundnum a�fer�um. Ni�urst��urnar auka skilning � varmageislun
svarthola og samspili �yngdarfr��i og skammtafr��i.
� seinni hluta ritger�arinnar, sem var unninn � samstarfi vi� Ulf
Danielsson pr�fessor vi� Uppsalah�sk�la, L�rus Thorlacius og Tobias
Zingg, doktorsnema vi� H�sk�la �slands, er n� a�fer�, svonefnd
�yngdarfr��ileg heilmyndun, �tf�r� fyrir �kve�in kerfi �
��ttefnisfr��i. Ni�urst��urnar gefa til kynna a� heilmyndarl�k�n geti
gefi� g��a l�singu � sterkt v�xlverkandi kerfum vi� l�gt hitastig.
� doktorsnefnd sitja, auk lei�beinanda, Ragnar Sigur�sson og ��r�ur
J�nsson, pr�fessorar vi� raunv�sindadeild H�sk�la �slands. Verkefni�
var styrkt af H�sk�lasj��i Eimskipaf�lags �slands.
Erling J�hann Brynj�lfsson f�ddist �ri� 1981. Hann lauk st�dentspr�fi
fr� Menntask�lanum � Reykjav�k �ri� 2001, BS-pr�fi fr� H�sk�la
�slands �ri� 2004 og meistarapr�fi fr� sama sk�la tveimur �rum s��ar.
S��an �� hefur hann unni� a� doktorsritger� sinni vi�
Raunv�sindastofnun H�sk�lans og NORDITA � Stokkh�lmi.
----
English version.
PhD-defense in theoretical physics at the University of Iceland.
Black Hole Thermodynamics and Non-Relativistic Holography.
On Friday, August 6th, Erling J�hann Brynj�lfsson will defend his PhD-
thesis titled Black hole thermodynamics and non-relativistic
holography. Opponents are Prof. Esko Keski-Vakkuri, from the
University of Helsinki and Prof. Niels Obers from the Niels Bohr
Institute in Copenhagen. Erling's PhD-advisor was Prof. L�rus
Thorlacius, University of Iceland and NORDITA, Nordic Institute for
Theoretical Physics in Stockholm.
Prof. Gu�mundur G. Haraldsson, Dean of the Faculty of Physical
Sicences, will conduct the ceremony which will take place in Askja,
room N-132, at 2 p.m.
The PhD-thesis is in theoretical physics and is divided into two parts.
The first part is on black hole thermodynamics and is based on
research in collaboration with L�rus Thorlacius. A definition of the
temperature measured by local observers in free-fall outside a black
hole is proposed using an embedding into a higher-dimensional flat
spacetime. The method provides an economical way to calculate the
local free-fall temperature which is difficult to obtain by more
direct calculations. The results enhance the understanding of black
hole thermal radiation and the interplay between gravity and quantum
physics.
The second part, based on research in collaboration with Prof. Ulf
Danielsson at the University of Uppsala, L�rus Thorlacius and Tobias
Zingg, a PhD-student at the University of Iceland, concerns the
application of holographic methods to systems in condensed matter
physics. The results indicate that holographic models can give a good
description of strongly coupled systems at low temperature.
Members of the doctoral committee along with the PhD-advisor were
Prof. ��r�ur J�nsson and Prof. Ragnar Sigur�sson of the University of
Iceland. The project was supported by the Eimskip Research Fund at
the University of Iceland.
Erling J�hann Brynj�lfsson was born in 1981. He graduated from the
Reykjav�k Junior College in 2001, obtained his BS-degree from the
University of Iceland in 2004 and an MS-degree from the same
university two years later. Since that time he has worked on his PhD-
research at the Science Institute of the University of Iceland and at
NORDITA in Stockholm.