IPM Positions

Resident Researcher, School of Particles and Accelerator (2013 - Present )

Past IPM Positions

Resident Researcher, School of Physics (1994 - 2004)

Non IPM Affiliations

Associate Professor of Isfahan University of Technology

Research Interests

Constrained Systems and Guage Theories

Present Research Project at IPM

Boundry Conditions as Constraints in Different Models

Related Papers

1.	Z. Molaee and A. Shirzad Constraint structure of the Generalized Proca model in the Lagrangian formalism Heliyon (2024),   [abstract] Code: IPM/A-2024/09

2.	A. Dokhani, Z. Molaee and A. Shirzad Gauge generator for bi-gravity and multi-gravity models Nucl. Phys. B 966 (2021),   [abstract] arXive.org link: 2001.10947 [ abs, src, ps, others], cited by Code: IPM/P.A-706

3.	Z. Molaee and A. Shirzad Hamiltonian formalism of the ghost free Tri(-Multi)gravity theory Class.Quant.Grav 38 (2021),   [abstract] arXive.org link: 1908.05041 [ abs, src, ps, others], cited by Code: IPM/P.A-681

4.	H. Khodabakhshi, A. Shirzad, F. Shojai and R. B. Mann Black Hole Entropy and Boundary Conditions Phys. Rev. D 101 (2020),   [abstract] Code: IPM/P.A-685

5.	H. Khodabakhshi, A. Shirzad, F. Shojai and R. Mann Black hole entropy and boundary conditions Phys. Rev. D 101 (2020),   [abstract] Code: IPM/P.A-646

6.	E. Bakhshaei and A. Shirzad Entanglement entropy and complexity of singular subregions in deformed CFT Eur. Phys. J. C 79 (2019),   [abstract] arXive.org link: 1902.02504 [hep-th] [ abs, src, ps, others], cited by Code: IPM/P.A-576

7.	K. Kargar, A. Shirzad and M. Monemzadeh Dynamical structure of fields in light cone coordinates Phys. Rev. D 99 (2019),   [abstract] arXive.org link: 1608.03255 [hep-th] [ abs, src, ps, others], cited by Code: IPM/P.A-572

8.	H. Khodabakhshi, F. Shojai and A. Shirzad On the classification of consistent boundary conditions for f(R)-gravity Eur. Phys. J. C 78:1003 (2018),   [abstract] Code: IPM/P.A-577

9.	Z. Molaee and A. Shirzad Hamiltonian structure of bi-gravity, problem of ghost and bifurcation Classical Quant. Grav. 36 (2018),   [abstract] arXive.org link: 1805.02179 [ abs, src, ps, others], cited by Code: IPM/P.A-575

10.	Z. Molaee and A. Shirzad Massive gravity, canonical structure and gauge symmetry Nucl. Phys. B 933 (2018), 248-261  [abstract] arXive.org link: 1709.04847 [hep-th] [ abs, src, ps, others], cited by Code: IPM/P.A-574

11.	M. Hajihashemi and A. Shirzad Hamiltonian structure of three-dimensional gravity in Vielbein formalism Phys. Rev. D 97 (2018),   [abstract] Code: IPM/P.A-522

12.	E. Bakhshaei, A. Mollabashi and A. Shirzad Holographic subregion complexity for singular surfaces Eur. Phys. J. C 77 (2017),   [abstract] arXive.org link: 1703.03469 [hep-th] [ abs, src, ps, others], cited by Code: IPM/P.A-573

13.	A. Akhavan, A. Ali Naseh, A. Nemati and A. Shirzad New Bi-Gravities  (Submitted) [abstract] Code: IPM/P.A-440

14.	A. Akhavan, M. Alishahiha, A. Naseh, A. Nemati and A. Shirzad New Bi-Gravity from New Massive Garvity JHEP 1605 (2016),   [abstract] Code: IPM/P.A-431

15.	M. Alishahiha, M. Majdzadeh Qaemmaqami, A. Naseh and A. Shirzad Holographic Renormalization of 3D Minimal Massive Gravity JHEP 1601 (2016),   [abstract] Code: IPM/P.A-412

16.	M. Alishahiha, M. M. Qaemmaqami, A. Naseh and A. Shirzad On 3D Minimal Massive Gravity JHEP 12 (2014),   [abstract] Code: IPM/P.A-388

17.	M. Sadegh and A. Shirzad Constraint Structure of The Three-Dimensional Massive Gravity Phys. Rev. D 83 (2011), 084040  [abstract] Code: IPM/P-2011/010

18.	M. Dehghan and A. Shirzad Simplifying the Algebra o First Class Constraints, SO(3) as an Example  (Preprint) [abstract] arXive.org link: arXiv:0811.0917 [ abs, src, ps, others], cited by Code: IPM/P-2008/070

19.	A. Shirzad Perfect and Imperfect Gauge Fixing J. Math. Phys. 48 (2007), 082303  [abstract] arXive.org link: hep-th/0609145 [ abs, src, ps, others], cited by Code: IPM/P-2006/082

20.	M. Dehghani and A. Shirzad The Reduced Phase Space of An Open String in The Background B-Field Eur. Phys. J. C 48 (2006),   [abstract] arXive.org link: hep-th/0511248 [ abs, src, ps, others], cited by Code: IPM/P-2006/080

21.	M. Monemzadeh and A. Shirzad Batalin-Fradkin-Tyutin Method for Mixed Constrained Systems and Chern-Simons Theory Phys. Rev. D 72 (2005), 045004  [abstract] Code: IPM/P-2005/076

22.	M. Monemzadeh and A. Shirzad Batalin-Fradkin-Tyutin Method for Mixed Constrained Systems and Chern-Simons Theory Phys. Rev. D 72 (2005), 045004  [abstract] Code: IPM/P-2005/076

23.	A. Shirzad and M. Mojiri The difficulty of symplectic analysis with second class systems J. Math. Phys. 46 (2005), 012702  [abstract] Code: IPM/P-2005/075

24.	M. Monemzadeh and A. Shirzad BFT Method for Mixed Constrained Systems and Chern-Simons Theory Phys. Rev. D 72 (2005), 045004  [abstract] arXive.org link: hep-th/0401230 [ abs, src, ps, others], cited by Code: IPM/P-2004/072

25.	A. Shirzad and M. Monemzadeh The BFT Method With Chain Structure Phys. Lett. B 584 (2004), 220-224  [abstract] arXive.org link: hep-th/0311131 [ abs, src, ps, others], cited by Code: IPM/P-2003/111

26.	M. Monemzadeh and A. Shirzad Finite Order BFFT Method Int. J. Mod. Phys. A 18 (2003), 5613-5626  [abstract] arXive.org link: hep-th/0301207 [ abs, src, ps, others], cited by Code: IPM/P-2003/110

27.	M. Mojiri and A. Shirzad Chain Structure in Symplectic Analysis of a Constrained System  (Preprint) [abstract] arXive.org link: hep-th/0210119 [ abs, src, ps, others], cited by Code: IPM/P-2002/092

28.	A. Shirzad and F. Loran Gauge fixing in the chain-by-chain method Int. J. Mod. Phys. A 17 (2002), 4801-4808  [abstract] arXive.org link: hep-th/9912289 [ abs, src, ps, others], cited by Code: IPM/P-2002/019

29.	F. Loran and A. Shirzad Classification of Constraints Using the Chain-by-Chain Method Int. J. Mod. Phys. A 17 (2002), 625-642  [abstract] arXive.org link: hep-th/0003010 [ abs, src, ps, others], cited by Code: IPM/P-2001/060

30.	A. Shirzad and P. Moyassari Dirac Quantization of Some Singular Theories  (Preprint) [abstract] arXive.org link: hep-th/0112194 [ abs, src, ps, others], cited by Code: IPM/P-2001/086

31.	A. Shirzad and M. Mojiri Constraint Structure in Modified Faddeev-Jackiw Method Mod. Phys. Lett. A 16 (2001), 2439-2448  [abstract] arXive.org link: hep-th/0110023 [ abs, src, ps, others], cited by Code: IPM/P-2001/035

32.	M.M. Sheikh-Jabbari and A. Shirzad Boundary Conditions as Dirac Constraints Eur. Phys. J. C 19 (2001), 383-390  [abstract] arXive.org link: hep-th/9907055 [ abs, src, ps, others], cited by Code: IPM/P-1999/037

33.	N. Sadeghnezhad and A. Shirzad Gauge Generators in Lagrangian and Hamiltonian Formulations  (Preprint) [abstract] Code: IPM/P-1998/021

34.	A. Shirzad and M. Shabani Moghadam Generator of Gauge Transformetion and Hamiltonian Constaint Structure  (Preprint) [abstract] Code: IPM/P-1998/020

35.	N. Sadeghnezhad and A. Shirzad Lagrangian and Hamiltonian Constraint Structure Coefficients J. Phys. A: Math. Gen. 31 (1998), 7403-7413  [abstract] Code: IPM/P-1998/002

36.	A. Shirzad Gauge Symmetry in Lagrangian Formulation and Schwinger Model J. Phys. A: Math. Gen. 31 (1998), 2747-2760  [abstract] Code: IPM/P-1997/013