**
Bulgarian Academy of Sciences**

Institute of Nuclear Research and Nuclear Energy

## IV. International Symposium

# QUANTUM THEORY AND SYMMETRIES

**Scope and Topics:**

The first Symposium of this series was held in Goslar (Germany) in 1999,
the second - in Cracow (Poland) in 2001, the third - in Cincinnati
(USA) in 2003. The series
started around the core concept that symmetries
underlie all descriptions of quantum systems. It has since evolved to
a symposium on the frontiers of theoretical and mathematical physics.
In the 4-th Symposium, which is dedicated to the
World Year of Physics 2005, we foresee the following **topics/sessions**:

*Symmetries in String Theory and Quantum Gravity,
Conformal Field Theory and (Super-)Gravity,
Gauge and Noncommutative Field Theories,
Quantum Computing, Information and Control,
Integrable Systems,
Foundations of Quantum Theory,
Dynamical Systems and Wigner Functions,
Symmetries in Condensed Matter and Statistical Physics,
Symmetries in Atomic and Nuclear Physics,
Symmetries in Chemistry, Biology and other Sciences.*

Partially overlapping with these topics, but on a more rigorous
mathematical level and with strong participation of mathematicians, the
symposium will include as a substructure the 6-th edition of the
** International Workshop "Lie Theory and Its Applications in Physics" (LT-6). ****
** The Workshop will be
co-organized with H.-D. Doebner and will be
represented by several plenary speakers and parallel sessions on:
* Representation Theory,
Infinite-Dimensional Symmetries,
Quantum Groups,
Superalgebras,
Generalized Spaces and Functions.*

Another independent activity is the
** Workshop on "Quantum Systems Related to Noncommutative Geometries,
Their Symmetries and Evolution Equations" ****
**
associated with QTS-4.
This Workshop is sponsored by the
** Alexander von Humboldt Foundation (Germany)**
through a tri-lateral Collaboration Clausthal-Leipzig-Sofia.
The Workshop is organized by the leaders of the three nodes of the Collaboration
(Doebner, G. Rudolph, Dobrev) and will be
represented by several plenary and parallel speakers.

**International Advisory Committee:**

V.P. Belavkin (Nottingham),
F. Calogero (Rome),
I. Cirac (Garching),
A. Connes (IHES),
R. Dijkgraaf (Amsterdam),
M.R. Douglas (Rutgers),
B. Dragovich (Belgrade),
L.D. Faddeev (St. Peterburg),
S. Ferrara (CERN),
K. Fredenhagen (Hamburg),
B. Julia (Paris),
V.G. Kac (MIT),
S. Majid (London),
M.D. Mateev (Sofia),
W. Miller (Minnesota),
A. Morozov (Moscow),
H. Nicolai (Potsdam),
S. Randjbar-Daemi (ICTP),
C. Rovelli (Marseille),
W. Schleich (Ulm),
C. Schweigert (Hamburg),
A. Sudbery (York),
I.T. Todorov (Sofia),
J. Wess (Munich),
P. Winternitz (Montreal),
E. Witten (Princeton)

**QTS Conference Board:**

S.T. Ali (Montreal),
L.L. Boyle (Canterbury),
M.A. del Olmo (Valladolid),
V.K. Dobrev (Sofia),
H.-D. Doebner (Clausthal, chair),
E. Kapuscik (Cracow),
V.I. Man'ko (Moscow),
G. Marmo (Naples),
G.S. Pogosyan (Yerevan and Dubna),
T.H. Seligman (Cuernavaca),
A.I. Solomon (Paris and Open University),
P. Suranyi (Cincinnati),
L.C.R. Wijewardhana (Cincinnati)

**Organization and Conference Site:**

The work of the Symposium will be organized in five morning
plenary sessions and four afternoons with several parallel sessions.
The Symposium will take place at Varna Free University (VFU)
on the Black Sea coast near Varna. Varna is
Bulgaria's third largest city and main naval port.
VFU is situated in Resort "Chaika", which is a small resort
between two of Bulgaria's best coastal resorts
"St. Konstantin and Elena" and "Golden Sands".

**Sponsors:**

- Institute of Nuclear Research and Nuclear Energy

- UNESCO - ROSTE (Regional Bureau for Science in Europe, Venice)

- National Science Foundation (USA)

- Abdus Salam International Centre for Theoretical Physics

- European Mathematical Society

- International Association of Mathematical Physics

- European Physical Society

**Address for correspondence:
**

**
Prof. V.K. Dobrev**

Bulgarian Academy of Sciences

Institute of Nuclear Research and Nuclear Energy

72 Tsarigradsko Chaussee

1784 Sofia

Bulgaria

Phone: +359 2 7144380,
Fax: +359 2 9753619,
E-mail: qts4@inrne.bas.bg,

WWW:
http://theo.inrne.bas.bg/~dobrev/qts-4.htm