Nanofluidic electrokinetics in quasi-two-dimensional branched U-turn channels

Nanofluidic electrokinetics in quasi-two-dimensional branched U-turn channels

Gea Oswah Fatah PARIKESIT

Teknik Fisika Delft

Abstrak

Nanofluidic electrokinetics in quasi-two-dimensional branched U-turn channels

Publikasi : Disertasi S3 (2007) Tanggal masuk / revisi : 19 Desember 2007 / 19 Desember 2007 Naskah lengkap : format PDF (1.704.983 byte) Kontak : Gea Oswah Fatah PARIKESIT Keterangan : fisika lain-lain 82 halaman bahasa Inggris

Applications of AdS/CFT in Quark Gluon Plasma

Applications of AdS/CFT in Quark Gluon Plasma

Ardian Nata Atmaja

Leiden University

Abstrak

Disertasi S3 di bidang fisika partikel teori di Leiden University dengan topik aplikasi AdS/CFT untuk fenomena Quark Gluon Plasma.

PROEFSCHRIFT

ter verkrijging van

de graad van Doctor aan de Universiteit Leiden,

op gezag van de Rector Magni¯cus prof.mr. P.F. van der Heijden,

volgens besluit van het College voor Promoties

te verdedigen op dinsdag 26 oktober 2010

klokke 13.45 uur

door

Ardian Nata Atmaja

Promotiecommissie:

Promotor: Prof. dr. J. de Boer (Universiteit Amsterdam)

Co-Promotor: dr. K. Schalm

Referent: Prof. dr. A. Ach¶ucarro

Overige leden: Prof. dr. J. Zaanen

Prof. dr. E.P. Verlinde (Universiteit Amsterdam)

Prof. dr. J.M. van Ruitenbeek

For many years, people have attempted to develop an ultimate theory that would explain the fundamental structure of matter and the very basic mechanisms of nature. One promising candidate is string theory. Born in the late 1960s as a theory that was expected to describe the strong interaction in hadrons, string theory had to accept the fact that another theory, known as QCD (Quantum Chromodynamics), correctly describes the strong nuclear force and the properties of hadrons. A new face of string theory arose in 1974 when John Schwarz and Joel Scherk proposed an interpretation of the spin-two massless particle in the spectrum of string theory to describe the quantum of gravity, namely graviton. Ever since string theory has received great attention of many scientists, not only from high-energy physicists, but also from various other ¯elds of study and so a journey to the ultimate theory has taken a new direction.

Publikasi	:	Disertasi S3 (2010)
Tanggal masuk / revisi	:	14 Januari 2011 / 14 Januari 2011
Naskah lengkap	:	format PDF (1.305.955 byte)
Kontak	:	Ardian Nata Atmaja
Keterangan	:	fisika teoritik 144 halaman bahasa Inggris

Higher dimensional defects in cosmology

Higher dimensional defects in cosmology

Handhika Satrio Ramadhan

Tufts University

Abstrak

Extra dimensions seem to be an important ingredient for unification of gravity with quantum field theory. Our best candidate of quantum gravity, superstring theory, requires ten-dimensional space-time for mathematical con- sistency. However, since our world appears four-dimensional there must be a mechanism that “hides” extra dimensions so that we do not experience them at low energy scale.

There are several methods in literature for concealing extra dimensions from our naked eye. In this thesis we only focus on two of them: braneworld scenario and flux compactification, both of which require the existence of the bulk fields. This thesis investigates the role topological defects can play as bulk fields in higher-dimensional cosmology with different asymptotic topology.

The first part deals with the non-singular braneworld: Skyrme branes and its higher- dimensional generalizations. We show how these defects regularize the naked singularity around the core while at the same time approach the same flat- asymptotic behavior as the known thin-wall solutions.

The second part is devoted to study an exotic transition, tunneling to (and from) nothing, in a landscape where the space-time vacua are direct products of X4 × S2 , with X4 can be: anti-de Sitter (AdS4 ), Minkowski (M4 ), or de Sitter (dS4 ). The tunneling is mediated by instanton solutions, via bubble nucleation.

The bubble wall is smooth and magnetically-charged, and we show that this can be accomplished by having solitonic brane possessing magnetic charge, i.e., magnetic-monopole branes.

Publikasi	:	Disertasi S3 (2011)
Tanggal masuk / revisi	:	16 Juli 2011 / 16 Juli 2011
Naskah lengkap	:	format PDF (1.347.581 byte)
Kontak	:	Handhika Satrio Ramadhan
Keterangan	:	fisika teoritik 174 halaman bahasa Indonesia

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