It is well-known that there are many higher dimensional extended objects in string theory and M-theory, and the understanding of their properties is important. Several approaches have been applied to investigate the properties of those objects, such as super Yang-Mills theory, higher gauge theory, field theory on loop space, string field theory, double field theory, etc. In this workshop, we review and discuss the approaches taken and compare the results obtained so far. We organized several series of lectures and a number of short talks.

## Higher Structures in String Theory and M-Theory

### Information

#### Date

March 7, 2016 – March 11, 2016

#### Venue

Science Complex C 2F Room N204, Faculty of Science, Aobayama North Campus, Tohoku University

【Access】【Campus Map】The building is shown as "H-04" in the Campus map.

#### Survey Lectures

Mathai Varghese (Adelaide Univ.)

Yuji Okawa (Univ. of Tokyo)

Jeong-Hyuck Park (Sogang Univ.)

Christian Saemann (Heriot-Watt Univ.)

Tamiaki Yoneya (Univ. of Tokyo & Open Univ. of Japan)

Maxim Zabzine (Uppsala Univ.)

#### Invited Speakers

M. A. Heller (Tohoku Univ.)

Noriaki Ikeda (Ritsumeikan Univ.)

Yukio Kaneko (Tohoku Univ.)

Yoshiaki Maeda (Tohoku Univ.)

Yutaka Matsuo (Univ. of Tokyo)

Hisayoshi Muraki (Tsukuba Univ.)

Patricia Ritter (Bolognia Univ.)

Thomas Strobl (Lyon Univ.)

Guo Chuan Thiang (Adelaide Univ.)

#### Organizers

**Tsuguhiko Asakawa**

(Maebashi Inst. of Tech.)

**Yutaka Matsuo**

(Univ. of Tokyo)

**Satoshi Watamura**

(Tohoku Univ.)

#### Time Schedule

- Monday, March 7, 2016
- 13:00
- Maxim Zabzine (Uppsala Univ.)

“Localization of supersymmetric gauge theory I”

- 14:15
- Tamiaki Yoneya (Univ. of Tokyo & Open Univ. of Japan)

“Covariantized M (atrix) Theory I”

- 15:30
- Jeong‐Hyuck Park (Sogang Univ.)

“Introduction to the semi‐covariant formulation of bosonic DFT”

- 16:45
- Guo Chuan Thiang (Adelaide Univ.)

“T‐duality and real K‐theory: a view from condensed matter physics”

- Tuesday, March 8, 2016
- 9:30
- Maxim Zabzine (Uppsala Univ.)

“Localization of supersymmetric gauge theory II”

- 10:45
- Christian Saemann (Heriot‐Watt Univ.)

“Higher Structures arising in M‐theory”

- 12:00
- Hisayoshi Muraki (Tsukuba Univ.)

“Gravity on Poisson Manifold”

- 14:15
- Tamiaki Yoneya (Univ. of Tokyo & Open Univ. of Japan)

“Covariantized M (atrix) Theory II”

- 15:30
- Jeong‐Hyuck Park (Sogang Univ.)

“Supersymmetric extension including R‐R sector”

- 16:45
- Patricia Ritter (Bolognia Univ.)

“Generalized Higher Gauge Theory”

- Wednesday, March 9, 2016
- 9:30
- Maxim Zabzine (Uppsala Univ.)

“Localization of supersymmetric gauge theory III”

- 10:45
- Christian Saemann (Heriot‐Watt Univ.)

“Categorification: Gerbes, Loop Spaces, Higher Gauge Theory”

- 12:00
- M. A. Heller (Tohoku Univ.)

“Poisson courant algebroid and Double Field Theory”

- 14:15
- Yuji Okawa (Univ. of Tokyo)

“Complete formulation of superstring field theory I”

- 15:30
- Jeong‐Hyuck Park (Sogang Univ.)

“Worldsheet action with doubled‐yet‐gauged coordinates; U‐gravity for U‐duality”

- 16:45
- Mathai Varghese (Adelaide Univ.)

“Exotic twisted equivariant cohomology of loop spaces, & the twisted Bismut-Chern character”

- Thursday, March 10, 2016
- 9:30
- Maxim Zabzine (Uppsala Univ.)

“Localization of supersymmetric gauge theory IV”

- 10:45
- Christian Saemann (Heriot‐Watt Univ.)

“The (2,0)‐theory and Multiple M5‐branes”

- 12:00
- Yukio Kaneko (Tohoku Univ.)

“Off‐shell covariantization of higher gauge theories based on QP‐manifold”

- 14:15
- Yuji Okawa (Univ. of Tokyo)

“Complete formulation of superstring field theory II”

- 15:30
- Noriaki Ikeda (Ritsumeikan Univ.)

“Higher structure and current algebra”

- 16:45
- Yutaka Matsuo (Univ. of Tokyo)

“Holomorphic field realization of SHc and quantum geometry of quiver gauge theories”

- Friday, March 11, 2016
- 9:30
- Mathai Varghese (Adelaide Univ.)

“Exotic twisted equivariant cohomology of loop spaces, & the twisted Bismut-Chern character”

- 10:45
- Christian Saemann (Heriot‐Watt Univ.)

“Higher Geometric (Pre)‐Quantization”

- 12:00
- Thomas Strobl (Lyon Univ.)

“Strings in singular space-times and their universal gauge theory”

- 13:00
- Yoshiaki Maeda (Tohoku Univ.)

“Geometry of loop space”

#### Contact

**Satoshi Watamura**

**Email: watamura＊tuhep.phys.tohoku.ac.jp (change ＊ to @)**