Speakers
Alina Czajka
(National Centre for Nuclear Research)
Juhee Hong
(Yonsei University)
Sangyong Jeon
(McGill University)
Description
Utilizing the gravitational Ward identities and gravity-hydrodynamics results, we clarify the analytic structure of all stress-energy correlation functions in the small frequency and the small wave-number limit. From the correlation functions, we obtain several new Kubo formulae for the viscosities. Interestingly, these new Kubo formulae are all obtained with the zero frequency limit taken first. We also clarify why in the usual ladder diagram calculation of viscosities, it does not seem to matter whether the zero frequency limit is taken first or the zero wave-number limit is taken first.
Author
Sangyong Jeon
(McGill University)
Co-authors
Alina Czajka
(National Centre for Nuclear Research)
Juhee Hong
(Yonsei University)