Institute for Mathematical Sciences Programs & Activities
Workshop on IDAQP and their Applications
(3  7 March 2014)
Dedicated to Professor Takeyuki Hida
Cosponsored by RIST, Quantum Bioinformatics Research Division, Tokyo University of Science,
Aichi Prefectural University
Organizing Committee · Visitors and Participants · Overview · Activities · Venue
Chair
 Masanori Ohya (Tokyo University of Science)
Members
 Louis Chen (National University of Singapore)
 Si Si (Aichi Prefectural University)
 Noboru Watanabe (Tokyo University of Science)
Advisory Committee
 Takeyuki Hida (Nagoya University and Meijo University)
 Luigi Accardi (University of Rome Tor Vergata)
In the past few years the fields of infinite dimensional analysis and quantum probability have undergone increasingly significant developments and have found many new applications, in particular, to classical probability and to different branches of physics. Those fields are rather wide and strongly related in interdisciplinary nature. We like to make a bridge among these interdisciplinary fields in our workshop. In these fields, we mainly focused on quantum information theory and white noise analysis in line with IDAQP. It is therefore quite a suitable time to organize an international workshop to have discussions among the researchers in the Asian area. We aim, through this workshop, at encouraging young mathematicians in Asian countries. We should consider good cooperation with researchers in other fields in order to explore new research directions. They are cordially invited to study with us such new exciting areas in mathematical sciences as quantum information theory and white noise analysis.
Research Activity
(1) Quantum Information Theory:
Based on classical probability theory, Shannon found that the entropy, introduced by Clausius and Boltzmann, can be used to express the amount of information, and he proposed the socalled information communication theory at the middle part of the 20th century. In his information theory, the entropy and the mutual entropy (information) are most important concepts and it has valuable contribution to modern society.
Since the present optical communication is using the optical signal including quantum effect, it is necessary to construct new information theory dealing with those quantum phenomena in order to discuss the efficiency of information transmission of optical communication processes rigorously. The quantum information theory is important in both mathematics and engineering, and it contains several topics, for instance, quantum entropy theory, quantum communication theory, quantum teleportation, quantum entanglement, quantum algorithm, quantum coding theory and so on. It has been developed with quantum entropy theory and quantum probability. In quantum information theory, one of the important problems is to investigate how much information is exactly transmitted to the output system from the input system through a quantum channel. The amount of information of the quantum communication system is described by the quantum mutual entropy defined by Ohya [O1], based on the quantum entropy by von Neumann, and the quantum relative entropy by Umegaki and Araki. The quantum information theory directly relates to quantum communication theory, for instance, [W1]. One of the most important communication processes is quantum teleportation, whose new treatment was studied in [O5]. It is important to classify quantum states. One of such classifications is to study entanglement and separability of states. There have been lots of trials in finite dimensional Hilbert spaces. Quantum mechanics should be basically discussed in infinite dimensional Hilbert spaces. We have to study such a classification in infinite dimensional Hilbert spaces.
It is possible to improve the performance of computers by using quantum effects. The quantum computer is highly anticipated giving a remarkable development for several research fields of the 21st century. Shor showed the effectiveness of the quantum computer in the prime factorization problem. Ohya and Volovich [O4] considered the NPcomplete problems, which are more difficult than the prime factorization problem, based on usual quantum algorithm and classical amplification by logistic map. They (OV) have shown that the satisfiability (SAT) problem as a NPcomplete problem can be mathematically solved in polynomial time by using their new quantum algorithm (see their book [B2] published from SpringerVerlag, page 369395). Their algorithm is a mathematical precise construction solving NPcomplete problems in quantum region.
Recently, one faces a fundamental problem appearing in many experiments (see [510]), particularly in biology, psychology and so on. It is the breaking of total probability law. We have studied this problem and we found a mathematical treatment [4] solving this problem in terms of the concepts of liftings [O3] and adaptive dynamics [O6]. This new mathematics is one of the nonKolmogorovian probability theory. We have lots of rooms to develop the theory.
(2) White Noise Analysis:
The dawning of the age of modern stochastic analysis is now with us. White noise analysis would be in a leading position of the analysis, and now it must be a good time to contribute to the development of the new exciting directions.
To concretize the idea and to be more precise from the white noise side, we propose two significant directions to be accomplished with much hope.
(i) Discover some more characteristic properties of generalized white noise functionals. There follows naturally the efficient use of the calculus to solve many problems in applications. We have so far obtained good results in quantum dynamics, path integrals and biology.
What we have really in mind in this direction are more general theory. Namely, we aim at discovering good realizations of "Duality", "Invariance", "Optimality" and other properties. As for the invariance, we have employed the "infinite dimensional rotation group " under which the white noise measure is kept invariant. Finer structure of the group should be investigated more extensively.
We have recognized that the notion of duality plays very significant role in the study of the analysis of white noise functionals. We have, so far, discovered only a little. In search of good examples we have to appeal to various tools from abstract mathematics.
As for the optimality we are suggested to consult with other fields like quantum information, molecular biology and statistics.
(ii) The second direction is concerned with the problem "Passage from digital to analogue". Namely, it means the passage from a system with discrete parameter to that is parametrized by a continuous parameter.
Unlike the case where nonrandom functions are concerned, the limiting procedure of random functions is very much complicated, so that careful considerations should be involved.
This problem itself is concerned with the foundation of probability theory. In order to investigate random complex phenomena, we are recommended to come to a system of independent elemental random variables, simply called "noise". The noise from which random variables are formed is parameterized, usually either by discrete parameter or continuous case.
In any case, functionals formed by discrete parameter noise lead us somewhat easy calculus, but they do approximate the functionals of a continuous parameter noise, which is to be taken mostly care of and is definitely important.
The case where functionals of Gaussian noise or Poisson noise depending on continuous time has been studied to some extent. For instance, nonlinear functionals of continuous parameter noise usually require renormalization. The operators used to analyze those functionals need careful modifications of those for discrete case, although we can give expressions of the operators analogous to those in the discrete parameter case.
After these complicated interpretations, appear real problems. There is a new noise depending on the space parameter. The significance of that noise has just been recognized recently. The probabilistic properties are, of course, different from those depending on time parameter and most of the properties of functionals of this new noise are not known. Still we know that lots of applications of analysis of functionals of new noise are not well discussed. It is interesting and important in applications to investigate of the functionals of new noise, where approximation is necessary. We shall find significant dissimilarity between time and space noises, in particular in the approximation course of digital to analogue. Thus, we have been given more complex and difficult problems in the analysis of generalized functionals of a noise depending on space.
09:45am  10:00am 
Registration 
10:00am  10:10am 
Opening Remarks 
10:10am  11:00am 
Some of future directions of white noise theory (PDF) 
11:00am  11:20am 
 Group Photo & Coffee Break  
11:20am  12:10pm 
A mathematical realization of von Neumann's measurement scheme 
12.10pm  01:30pm 
 Lunch Reception at IMS  
01:30pm  02:20pm 
On fluctuation with memory and white noise analysis 
02:20pm  03:10pm 
Local statistics for random self adjoint operators 
03:10pm  03:30pm 
 Coffee Break  
03:30pm  04:20pm 
Quantum white noise derivatives and series expansions of super operators 
04:20pm  05:10pm 
Two types of quantum correlation of quantum composite system 
Tuesday, 4 Mar 2014 

09:45am  10:00am 
Registration 
10:00am  10:50am 
Quantum compressed sensing 
10:50am  11:10am 
 Coffee Break  
11:10am  12:00nn 
Normal approximation for Jack measures 
12.00nn  01:30pm 
 Lunch  
01:30pm  02:20pm 
Quantum quadratic operators and their properties (PDF) 
02:20pm  03:10pm 
Multiple Markov properties of Gaussian processes and their control (PDF) 
03:10pm  03:30pm 
 Coffee Break  
03:30pm  04:20pm 
Stochastic integration with respect to Gaussian processes 
04:20pm  05:10pm 
New noise depending on the space parameter and the concept of multiplicity (PDF) 
Wednesday, 5 Mar 2014 

09:45am  10:00am 
Registration 
10:00am  10:50am 
Deduction of noncommutativity from commutativity: applications to quantum mechanics and classical probability theory (PDF) 
10:50am  11:10am 
 Coffee Break  
11:10am  12:00nn 
Evolution with gross Laplacian noise (PDF) 
12.00nn  01:30pm 
 Lunch Reception at IMS  
01:30pm  02:45pm 

03:00pm 
Gardens by the Bay Excursion (Self Paid) 
Thursday, 6 Mar 2014 

09:45am  10:00am 
Registration 
10:00am  10:50am 
Quantum holography and classical random fields (PDF) 
10:50am  11:10am 
 Coffee Break  
11:10am  12:00nn 
Dynamic behavior of some stochastic predatorprey models 
12.00nn  01:30pm 
 Lunch  
01:30pm  02:20pm 
ItÃ´ formula for generalized white noise functionals (PDF) 
02:20pm  03:10pm 
Hida distribution construction of indefinite metric (Ø^{p})_{d} (d ≥ 4) quantum field theory 
03:10pm  03:30pm 
 Coffee Break  
03:30pm  04:20pm 
A hysteresis effect on optical illusion and nonKolmogorovian probability 
04:20pm  05:10pm 
Weighted Fourier algebras on SUq(2): characters and finite dimensional representations (PDF) 
Friday, 7 Mar 2014 

09:45am  10:00am 
Registration 
10:00am  10:50am 
Polymer measures  a progress report 
10:50am  11:10am 
 Coffee Break  
11:10am  12:00nn 
Note on entropy type complexity of communication processes 
12.00nn  01:30pm 
 Lunch  
01:30pm  02:20pm 
Sensitive homology searching based on MTRAP alignment 
02:20pm  02:40pm 
Students and researchers who are interested in attending these activities are requested to complete the online registration form.
The following do not need to register:
 Those invited to participate.
Organizing Committee · Visitors and Participants · Overview · Activities · Venue