PT-symmetry-meetings' homepage

conference series

Pseudo-Hermitian Hamiltonians
in Quantum Physics

the next meeting of the series is




July 31st - August 4th, 2023

in Istanbul, Turkey
some complementary info is here

cca 54 participants, no proceedings;

local organizer:
Ali Mostafazadeh


March 18 - 22, 2019

in Sanya, Hainan province, China;
more detailed info is here and here;

cca 59 participants, no proceedings;
see also the photos from the meeting
local organizers:
Shao-Ming Fei, Miloslav Znojil
and Xianqing Li-Jost


June 4-13, 2018

Bengaluru, Karnataka, India

see the webpage of the meeting here

or the poster here
local organizers:
Bhabani Prasad Mandal, Manas Kulkarni et al.

the 17th PHHQP workshop

"Non-Hermitian Hamiltonians in Physics:
Theory and Experiment"

supported by

took place, during May 14 - 19, 2017
(as the 642th "Wilhelm und Else-Heraus Seminar")
in Bad Honnef, Germany,
in the

Physics Centre of the German Physical Society

main organizers:
Guenter Wunner and Eva-Maria Graefe

cca 66 participants, no proceedings;

the photo of participants:

plus identification pattern

the 16th PHHQP workshop

"Pseudo-Hermitian Operators in Physics"

took place, during August 8 - 12, 2016,
in Kyoto, Japan,
in the Maskawa Hall of

main organizer: professor Naomichi Hatano
cca 60 participants, no proceedings,

official photo (4.6 MB):

the 15th PHHQP workshop

(cf. the official webpage )

took place, during May 18 - 23, 2015,

�Sala Lanza� of the Botanic Garden (Orto Botanico),
Via Lincoln, 2 - 90123, Palermo, Italy

main organizer: professor Fabio Bagarello
cca 67 participants
see photo below (1.8 MB):

the proceedings
in "Springer Proceedings in Physics", vol. 184
ISSN: 0930-8989
editors: F. Bagarello et al.
published (2016).

the 14th PHHQP workshop

(cf. the official webpage )
took place, during September 5 - 10, 2014,
in the campus of

in Setif, Algeria,

main organizer: professor Mustapha Maamache
cca 68 participants
see photo below (5.5 MB):

M. Znojil, ed.,
International Journal of Theoretical Physics,
Volume 54, Issue 11, October 2015,
Pages 3867 - 4183

ISSN: 0020-7748
(ISSN: 1572-9575 for electronic version)

the 13th PHHQP workshop

"Quantum (and Classical) Physics
with Non-Hermitian Operators"

two years delayed,
the meeting finally took place
in Jerusalem, Israel,
during July 12 - July 16, 2015
on the Edmond J. Safra Campus of

at IIAS:

main organizer: professor Joshua Feinberg

all talks are available

or in proceedings
shared with PHHQP XV (see above)

the 12th PHHQP workshop

"Pseudo-Hermitian Operators in Physics"

took place, during July 2 - 6, 2013,
in the

in Istanbul, Turkey,

main organizer: professor Ali Mostafazadeh,
cca 67 participants, no proceedings,

photo (7.3 MB):

plus identification pattern and
(an incomplete) name assignment

the 11th PHHQP workshop

"Non-Hermitian Operators in Quantum Physics"

August 27 - 31, 2012,
main organizer: J.-P. Gazeau

Lab. AstroParticule et Cosmologie (APC)
10 rue Alice Domon et Leonie Duquet
75025 Paris, France

cca 60 participants:

and poster:

in place of proceedings,
edited book
"Non-Selfadjoint Operators in Quantum Physics: Mathematical Aspects"
ISBN: 978-1-118-85528-7, 432 pages
(c) 2015 John Wiley & Sons, Inc.
edited by Fabio Bagarello, Jean-Pierre Gazeau,
Franciszek H. Szafraniec and Miloslav Znojil,
printed in July 2015:

the 10th PHHQP workshop

was organized as a part of the
International Seminar and Workshop

"Quantum Physics with Non-Hermitian Operators"

and it took place in
Max Planck Institute

in Dresden, Germany

during June 14 - 25, 2011
main organizer: I. Rotter

cca 100 participants:

special issue
of Fortschritte and of J. Phys. A;
reference here

the 9th PHHQP workshop
(see the official webpage)
took place in

in Hangzhou, China, during June 21 - 24, 2010.

main organizer: Jun De Wu

cca 80 participants:

(cf. the names)

appeared in the special issue of

International Journal of Theoretical Physics

Nr. 4 (April 2011), pp. 953 - 1333 .

guest editors:
Wu Junde (Zhejiang University, China) and
Miloslav Znojil (NPI �e�).

the 8th PHHQP workshop
(see a photo)

organized by

in the Homi Bhabha Centre for Science Education
and in the Tata Institute of Fundamental Research
in Mumbai

during January 12 - 16, 2009;

main organizers: S. R. Jain and Z. Ahmed

proceedings appeared in
Pramana - J. Phys.,
Part I: No. 2, August 2009, pp. 215 -- 422,
Part II: No 3, September 2009, pp. 417 -- 626.
reprinted as the book:e
"Non-Hermitian Hamiltonians in Quantum Physics"
(Indian Acad. Sci., Bangalore, 2009)
guest editors:
Sudhir R. Jain and Zafar Ahmed

the 7th PHHQP workshop
(see two photos and the official webpage)

co-organized with

in the Benasque Centre for Science , Spain,

during June 29 - July 11, 2008;

main organizer: A. A. Andrianov
proceedings: special issue

SIGMA 5 (2009)
items 1,5,7,17,18,39,43,47,53,64,69.
guest editors:
A. A. Andrianov, C. M. Bender, H. F. Jones,
A. V. Smilga and M. Znojil.

the 6th PHHQP workshop
(see 142 photos and the official webpage)

co-organized with

during 16 - 18 July, 2007,
in London, UK,

main organizer: A. Fring

J. Phys. A: Math. Gen. 41 (2008) 240301 - 244027,
special issue
dedicated to the subject of the Workshop
(Nr. 24, 20 June 2008),
guest editors A. Fring, H. F. Jones and M. Znojil.

the 5th PHHQP workshop

organized by

on July 3rd - 5th, 2006,
in Bologna, Italy,
main organizer: E. Caliceti

parallel special issue:
Czech. J. Phys. 56 (2006) 885 - 1064
(Nr. 9, September 2006),
guest editor: M. Znojil.

the 4th PHHQP workshop
(see photo or photo or official photo and official webpage)

co-organized with

campus in Stellenbosch, South Africa,
November 22 - 25, 2005;
main organizer: H. B. Geyer

J. Phys. A: Math. Gen. 39 (2006) 9963 - 10262,
special issue dedicated to the physics of non-Hermitian operators
(Nr. 32, 11. August 2006),
guest editors H. Geyer, D. Heiss and M. Znojil.

the 3rd PHHQP workshop
(see photo and official webpage)

co-organized with

campus in Istanbul, Turkey,
June 20 - 22, 2005;
main organizer: A. Mostafazadeh
proceedings in

Czech. J. Phys. 55 (2005) 1045 - 1192,
guest editor: M. Znojil.

the 2nd PHHQP workshop
(see photo)

organized solely by

Villa Lanna, Prague, Czechia,
June 14 - 16 , 2004
main organizer: M. Znojil

Czech. J. Phys. 54 (2004) 1005 - 1148,
guest editor: M. Znojil.

the 1st PHHQP workshop
(see photo)

co-organized with

Villa Lanna, Prague,, Czechia,
June 16 - 17 , 2003
main organizer: M. Znojil
Czech. J. Phys. 54 (2004) 1 - 156,
guest editor: M. Znojil.

note: a few older PHHQP proceedings are available
upon emailed request.

preliminary plans of the next meeting:

the three existing proposals are currently discussed
by the members of the steering committee:

Carl Bender (Washington University, St. Louis)
Andreas Fring (City, University of London)
Ali Mostafazadeh (Koc University, Istanbul)
Petr Siegl (Technische Universitaet, Graz)
and Miloslav Znojil (NPI Rez)

the currently emerging possibility:


in the

you may already email your inquiries to MZ


the possibility number two:



(or, possibly, in Samarkand or Buchara)
inquiries are to be answered by Davron Matrasulov

the currently postponed option number three:



email, in due time, your inquiries to MZ
or, better, to Andreas Fring

number four:


Valdivia, Chile

email, in due time, your inquiries to MZ
or to Francisco Correa

hypothetical option number five:



to take place


Center for Nonlinear Studies
LANL, Santa Fe, USA
email, but not this year, your inquiries to
Yogesh Joglekar or
Avadh Saxena

last, but not least, option six:



to take place

in the campus of the

do not email your inquiries, please, to anybody yet


besides the PHHQP conference series
we recommend also the
Zoomed and recorded

vPHHQP seminars

organized by Andreas Fring
(City, University of London)
and by Francisco Correa
(Universidad Austral de Chile)

page updated: September 7th, 2023