IPM Positions

Visiting Researcher, School of Biological Sciences (2020 - Present )

Past IPM Positions

Post-Doctoral Research Fellow, School of Biological Sciences (2015 - 2020)

Research Interests

Black hole thermodynamics and conserved charges, Classical gravity accompanied with quantum fields, Memory effect and soft charges.

Related Papers

1.	K. Hajian and A. Seraj Symplectic Structure of Extremal Black Holes ( In: Springer Proc.Phys.) [abstract] Code: IPM/P-2019/006

2.	K. Hajian, M.M. Skheikh-Jabbari and H. Yavartanoo Fluffing Extreme Kerr Phys. Rev. D 98 (2018), 026025  [abstract] arXive.org link: 1708.06378 [ abs, src, ps, others], cited by Code: IPM/P-2017/037

3.	D. Chernyavsky and K. Hajian Cosmological constant is a conserved charge Classical Quant. Grav. 35 (2017),   [abstract] Code: IPM/P-2017/049

4.	K. Hajian and M.M. Sheikh-Jabbari Redundant and Physical Black Hole Parameters: Is there an independent physical dilaton charge? Phys. Lett. B 768 (2017), 228-234   [abstract] Code: IPM/P-2016/062

5.	M. Ghodrati, K. Hajian and M.R. Setare Revisiting Conserved Charges in Higher Curvature Gravitational Theories Eur. Phys. J. C 76 (2016), 701  [abstract] Code: IPM/P-2016/020

6.	S. Aghapour and K. Hajian Black Hole Entropy from Entropy of Hawking Radiation J.Mod.Phys. 7 (2016), 2063-2070  [abstract] Code: IPM/P-2016/009

7.	K. Hajian Conserved charges and first law of thermodynamics for Kerr-de Sitter black holes General Relativity and Gravitation 48 (2016), 114  [abstract] Code: IPM/P-2016/004 Note: DOI: 10.1007/s10714-016-2108-4

8.	K. Hajian and M.M. Sheikh-Jabbari Solution Phase Space and Conserved Charges: A General Formulation for Charges Associated with Exact Symmetries Phys. Rev. D 93 (2016), 044074  [abstract] Code: IPM/P-2015/073

9.	F. Semih Dündar and K. Hajian Quantum Jump from Singularity to Outside of Black Hole JHEP 1602 (2016), 175  [abstract] Code: IPM/P-2015/013

10.	G. Comp\`{e}re, K. Hajian, A. Seraj and M.M. Sheikh-Jabbari Wiggling Throat of Extremal Black Holes JHEP 1510 (2015), 093  [abstract] Code: IPM/P-2015/032

11.	G. Compere, K. Hajian, A. Seraj and M.M. Sheikh-Jabbari Extremal Rotating Black Hole in the Near-Horizon Limit: Phase Space and Symmetry Algebra Phys. Lett. B 749 (2015), 443-447  [abstract] arXive.org link: 1503.07861v1 [hep-th] [ abs, src, ps, others], cited by Code: IPM/P-2015/002

12.	K. Hajian, A. Seraj and M.M. Sheikh-Jabbari Near Horizon Extremal Geometry Perturbations: Dynamical Field Perturbations vs. Parametric Variations JHEP 111 (2014), 10  [abstract] Code: IPM/P-2014/028

13.	K. Hajian, A. Seraj and M.M. Sheikh-Jabbari NHEG Dynamics: Laws of Near Horizon Extremal Geometry (thermo)Dynamics JHEP 1403 (2014), 014   [abstract] arXive.org link: 1310.3727 [ abs, src, ps, others], cited by Code: IPM/P-2013/033