IPM Positions

Professor, School of Astronomy (2012 - Present )

Past IPM Positions

Head, School of Astronomy (2017 - 2023) Faculty Member , School of Physics (2008 - 2012)

Research Interests

Early Universe Cosmology, Inflation, Cosmological Perturbation Theory, High Energy Physics

Related Papers

1.	H. Firouzjahi Loop corrections in the bispectrum in ultraslow-roll inflation with PBHs formation Phys. Rev. D 110 (2024), 043519  [abstract] Code: IPM/A-2024/20

2.	H. Firouzjahi Quantum fluctuations in the interior of black holes and backreactions Phys. Rev. D 110 (2024), 025022  [abstract] Code: IPM/A-2024/19

3.	H. Firouzjahi Upper Bounds on the Mass of Fundamental Fields from Primordial Universe  (Preprint) [abstract] Code: IPM/A-2024/18

4.	H. Firouzjahi and H. Sheikhahmadi Vacuum zero point energy of self-interacting quantum fields in dS background Phys. Rev. D 109 (2024), 125005  [abstract] Code: IPM/A-2024/17

5.	H. Firouzjahi Revisiting loop corrections in single field ultraslow-roll inflation Phys. Rev. D 109 (2024), 043514  [abstract] Code: IPM/A-2024/16

6.	H. Firouzjahi and A. Riotto Primordial Black Holes and loops in single-field inflation JCAP 2024 (2024), 021  [abstract] Code: IPM/A-2024/15

7.	K. Asadi, A. Nassiri-Rad and H. Firouzjahi Stochastic multiple fields inflation: Diffusion dominated regime Phys. Rev. D 108 (2023),   [abstract] Code: IPM/A-2023/31

8.	H. Firouzjahi and A. Riotto Sign of non-Gaussianity and the primordial black holes abundance Phys. Rev. D 108 (2023),   [abstract] Code: IPM/A-2023/30

9.	A. Talebian, Seyed A. Hosseini Mansoori and H. Firouzjahi Inflation from Multiple Pseudo-scalar Fields: Primordial Black Hole Dark Matter and Gravitational Waves Astrophysical Journal 948 (2023),   [abstract] Code: IPM/A-2023/24

10.	H. Firouzjahi One-loop corrections in power spectrum in single field inflation JCAP 2023 (2023),   [abstract] Code: IPM/A-2023/14

11.	H. Firouzjahi Loop corrections in gravitational wave spectrum in single field inflation Phys. Rev. D 108 (2023),   [abstract] Code: IPM/A-2023/13

12.	H. Firouzjahi and A. Talebian Induced gravitational waves from ultra slow-roll inflation and pulsar timing arrays observations JCAP 2023 (2023),   [abstract] Code: IPM/A-2023/12

13.	H. Firouzjahi and H. Sheikhahmadi Vacuum Zero Point Energy and its Statistical Correlations in dS Background Phys. Rev. D 108 (2023),   [abstract] Code: IPM/A-2023/05

14.	A. Talebian, A. Nassiri-Rad and H. Firouzjahi Primordial Helical Magnetic Fields from Inflation? Phys. Rev. D 105 (2022),   [abstract] Code: IPM/A-2021/35

15.	Seyed A. Hosseini Mansoori, A. Talebian, Z. Molaee and H. Firouzjahi Multifield mimetic gravity Phys. Rev. D 105 (2022),   [abstract] Code: IPM/A-2021/36

16.	H. Firouzjahi and A. Talebian White Hole Cosmology and Hawking Radiation from Quantum Cosmological Perturbation Phys. Rev. D 106 (2022),   [abstract] Code: IPM/A-2022/29

17.	H. Moshafi, H. Firouzjahi and A. Talebian Multiple transitions in vacuum dark energy and H0 tension Astrophysical Journal 920 (2022),   [abstract] Code: IPM/A-2022/28

18.	H. Firouzjahi Cosmological constant problem on the horizon Phys. Rev. D 106 (2022),   [abstract] Code: IPM/A-2022/27

19.	A. Nassiri-Rad, K. Asadi and H. Firouzjahi Inflation with Stochastic Boundary Phys. Rev. D 106 (2022),   [abstract] Code: IPM/A-2022/26

20.	H. Firouzjahi Cosmological constant and vacuum zero point energy in black hole backgrounds Phys. Rev. D 106 (2022),   [abstract] Code: IPM/A-2022/14

21.	S. Hooshangi, A. Talebian, M H. Namjoo and H. Firouzjahi Multiple field ultraslow-roll inflation: Primordial black holes from straight bulk and distorted boundary Phys. Rev. D 105 (2022),   [abstract] Code: IPM/A-2022/13

22.	H. Firouzjahi, M A. Gorji, Sh. Mukohyama and A. Talebian Dark matter from entropy perturbations in curved field spac Phys. Rev. D 105 (2022),   [abstract] Code: IPM/A-2021/43

23.	H. Firouzjahi, M A. Gorji, Sh. Mukohyama and B. Salehian Dark photon dark matter from charged inflaton Journal of High Energy Physics (JHEP) (2021),   [abstract] Code: IPM/A-2021/13

24.	B. Salehian, M A. Gorji, H. Firouzjahi and Sh. Mukohyama Vector dark matter production from inflation with symmetry breaking Phys. Rev. D 103 (2021),   [abstract] Code: IPM/A-2021/09

25.	Seyed A. Hosseini Mansoori, A. Talebian and H. Firouzjahi Mimetic Inflation Journal of High Energy Physics (JHEP) (2021),   [abstract] Code: IPM/A-2020/38

26.	M A. Gorji, Seyed A. Hosseini Mansoori and H. Firouzjahi Inflation with multiple vector fields and non-Gaussianities JCAP 2020 (2020),   [abstract] Code: IPM/A-2020/41

27.	A. Talebian, A. Nassiri-Rad and H. Firouzjahi Revisiting magnetogenesis during inflation Phys. Rev. D 102 (2020),   [abstract] Code: IPM/A-2020/40

28.	H. Firouzjahi, A. Nassiri-Rad and M. Noorbala Stochastic nonattractor inflation Phys. Rev. D 102 (2020),   [abstract] Code: IPM/A-2020/33

29.	H. Firouzjahi, A. Karami and T . Rostami Vacuum decay in the presence of a cosmic string Phys. Rev. D 101 (2020),   [abstract] Code: IPM/A-2020/12

30.	M A . Gorji, A. Allahyari, M. Khodadi and H. Firouzjahi Mimetic black holes Phys. Rev. D 101 (2020),   [abstract] Code: IPM/A-2020/08

31.	A. Talebian, A. Nassiri-Rad and H. Firouzjahi Stochastic effects in anisotropic inflation Phys. Rev. D 101 (2020),   [abstract] Code: IPM/A-2019/35

32.	A. Allahyari, H. Firouzjahi and B. Mashhoon Quasinormal modes of generalized black holes: δ-Kerr spacetime Classical Quant. Grav. 37 (2020),   [abstract] Code: IPM/A-2019/27

33.	H. Firouzjahi and B. Mashhoon Twisted gravitational waves in the presence of a cosmological constant Phys. Rev. D 100 (2019),   [abstract] Code: IPM/A-2019/29

34.	M. Noorbala and H. Firouzjahi Boundary crossing in stochastic inflation with a critical number of fields Phys. Rev. D 100 (2019),   [abstract] Code: IPM/A-2019/28

35.	H. Firouzjahi, M A. Gorji, Seyed A. Hosseini Mansoori, A. Karami and T. Rostami Charged Vector Inflation Phys. Rev. D 100 (2019),   [abstract] Code: IPM/A-2019/18

36.	M A. Gorji, Sh. Mukohyama and H. Firouzjahi Cosmology in mimetic SU(2) gauge theory JCAP 2019 (2019),   [abstract] Code: IPM/A-2019/08

37.	S. Shakeri, M A. Gorji and H. Firouzjahi Schwinger Mechanism During Inflation Phys. Rev. D 99 (2019),   [abstract] Code: IPM/A-2019/04

38.	B. Salehian and H. Firouzjahi Vacuum decay and bubble nucleation in f(R) gravity Phys. Rev. D 99 (2019),   [abstract] Code: IPM/A-2018/25

39.	H. Firouzjahi, A. Nassiri-Rad and M. Noorbala Stochastic Ultra Slow Roll Inflation JCAP 2019 (2019),   [abstract] Code: IPM/A-2018/24

40.	A. Allahyari, H. Firouzjahi and B. Mashhoon Quasinormal Modes of a Black Hole with Quadrupole Moment Phys. Rev. D 99 (2019),   [abstract] Code: IPM/A-2018/23

41.	A A. Abolhasani, H. Firouzjahi, A. Naruko and M. Sasaki Basic formulation of δN formalism world scientific (2019), 184  [abstract] Code: IPM/A-2018/22

42.	M. Noorbala, V. Vennin, H. Assadullahi, H. Firouzjahi and D. Wands Tunneling in stochastic inflation JCAP 2018 (2018),   [abstract] Code: IPM/A-2018/27

43.	H. Firouzjahi, M A. Gorji, Seyed A. Hosseini Mansoori, A. Karami and T. Rostami Two-field disformal transformation and mimetic cosmology JCAP 2018 (2018),   [abstract] Code: IPM/A-2018/26

44.	M A. Gorji, Sh. Mukohyama, H. Firouzjahi and Seyed A. Hosseini Mansoori Gauge field mimetic cosmology JCAP 2018 (2018),   [abstract] Code: IPM/A-2018/07

45.	M. Zarei, H. Firouzjahi and Sh. Mukohyama Vector disformal transformation of cosmological perturbations Phys. Rev. D 97 (2018),   [abstract] Code: IPM/A-2017/36

46.	M A. Gorji, Seyed A. Hosseini Mansoori and H. Firouzjahi Higher Derivative Mimetic Gravity JCAP 2018 (2018),   [abstract] Code: IPM/A-2017/35

47.	H. Firouzjahi, S. Jazayeri, A. Karami and T. Rostami Bubble nucleation and inflationary perturbations JCAP 2017 (2017),   [abstract] Code: IPM/A-2017/34

48.	S. Jazayeri, A. Vafaei Sadr and H. Firouzjahi Primordial anisotropies from cosmic strings during inflation Phys. Rev. D 96 (2017),   [abstract] Code: IPM/A-2017/27

49.	H. Firouzjahi, M A. Gorji and A. Hosseini Mansoori Instabilities in Mimetic Matter Perturbations JCAP (Submitted) [abstract] Code: IPM/A-2017/07

50.	S. Jazayeri, A. Vafaei Sadr and H. Firouzjahi Primordial anisotropies from cosmic strings during inflation Phys. Rev. D (Submitted) [abstract] Code: IPM/A-2017/06

51.	T. Rostami, A. Karami and H. Firouzjahi Effective field theory of statistical anisotropies for primordial bispectrum and gravitational waves JCAP 2017 (2017), 31  [abstract] Code: IPM/A-2017/46

52.	V. Vennin, H. Assadullahi, H. Firouzjahi, M. Noorbala and D. Wands Critical Number of Fields in Stochastic Inflation Phys. Rev. Lett. (2017),   [abstract] Code: IPM/A-2016/12

53.	H. Firouzjahi Primordial Universe Inside the Black Hole and Inflation arXiv (2016), 23  [abstract] Code: IPM/A-2016/27

54.	H. Assadullahi, H. Firouzjahi, M. Noorbala, V. Vennin and D. Wands Multiple Fields in Stochastic Inflation JCAP (2016),   [abstract] Code: IPM/A-2016/13

55.	H. Firouzjahi, A. Karami and T. Rostami Primordial inhomogeneities from massive defects during inflation JCAP (2016),   [abstract] Code: IPM/A-2016/11

56.	A A. Abolhasani, M. Akhshik, R. Emami and H. Firouzjahi Primordial Statistical Anisotropies: The Effective Field Theory Approach JCAP (2016),   [abstract] Code: IPM/A-2015/22

57.	f. Hassani, Sh. Baghram and H. Firouzjahi Lensing as a Probe of Early Universe: from CMB to Galaxies JCAP 2016 (2016),   [abstract] Code: IPM/A-2015/21

58.	R. Emami and H. Firouzjahi Clustering Fossil from Primordial Gravitational Waves in Anisotropic Inflation JCAP (2015),   [abstract] Code: IPM/A-2015/25

59.	S. Aiola, B. Wang, A. Kosowsky, T. Kahniashvili and H. Firouzjahi Microwave Background Correlations from Dipole Anisotropy Modulation Phys. Rev. D (2015),   [abstract] Code: IPM/A-2015/24

60.	M. Akhshik, H. Firouzjahi and S. Jazayeri Cosmological Perturbations and the Weinberg Theorem JCAP 2015 (2015),   [abstract] Code: IPM/A-2015/23

61.	M. Akhshik, H. Firouzjahi and S. Jazayeri Effective Field Theory of non-Attractor Inflation JCAP (2015),   [abstract] Code: IPM/A-2015/09

62.	H. Assadullahi, H. Firouzjahi, M.H. Namjoo and D. Wands CMB hemispherical asymmetry from non-linear isocurvature perturbations JCAP 2015 (2015), 15  [abstract] Code: IPM/A-2015/08

63.	M.H. Namjoo, A.A. Abolhasani, H. Assadullahi, S. Baghram, H. Firouzjahi and D. Wands Expected dipole asymmetry in CMB polarization JCAP 2015 (2015), 10  [abstract] Code: IPM/A-2015/07

64.	X. Chen, R. Emami, H. Firouzjahi and Yi. Wang CMB statistical anisotropies of classical and quantum origins JCAP 2015 (2015), 16  [abstract] Code: IPM/A-2014/12

65.	sh. Baghram, A A. Abolhasani, H. Firouzjahi and M H. Namjoo Fingerprints of Anomalous Primordial Universe on the Abundance of Large Scale Structures JCAP (2014),   [abstract] Code: IPM/A-2014/63

66.	A. Abolhasani, S. Baghram, H. Firouzjahi and M.H. Namjoo Asymmetric Sky from the Long Mode Modulations Phys. Rev. D 89 (2014), 16  [abstract] Code: IPM/A-2014/23

67.	A. Abolhasani, R. Emami and H. Firouzjahi Primordial Anisotropies in Gauged Hybrid Inflation JCAP 2014 (2014), 21  [abstract] Code: IPM/A-2014/20

68.	R. Emami, H. Firouzjahi and M. Zarei Anisotropic Inflation with the non-Vacuum Initial State Phys. Rev. D (2014),   [abstract] Code: IPM/A-2014/19

69.	H. Firouzjahi and M.H. Namjoo Jump in fluid properties of inflationary universe to reconcile scalar and tensor spectra Phys. Rev. D 90 (2014), 12  [abstract] Code: IPM/A-2014/18

70.	X. Chen, R. Emami, H. Firouzjahi and Y. Wang The TT, TB, EB and BB correlations in anisotropic inflation JCAP (2014), 27  [abstract] Code: IPM/A-2014/17

71.	R. Emami, H. Firouzjahi and Y. Wang Scalar-Tensor Anti-Cross-Correlation does not Help to Reconcile the Tension between BICEP2 and Planck Phys. Rev. D (2014),   [abstract] Code: IPM/A-2014/16

72.	M. Akhshik, R. Emami, H. Firouzjahi and Y. Wang Statistical Anisotropies in Gravitational Waves in Solid Inflation JCAP (Accepted) [abstract] Code: IPM/A-2014/15

73.	M.H. Namjoo, A. Abolhasani, S. Baghram and H. Firouzjahi CMB Hemispherical Asymmetry: Long Mode Modulation and non-Gaussianity JCAP 2014 (2014), 11  [abstract] Code: IPM/A-2014/14

74.	S. Jazayeri, Y. Akrami, H. Firouzjahi, A. R. Solomon and Y. Wang Inflationary power asymmetry from primordial domain walls JCAP 2014 (2014), 22  [abstract] Code: IPM/A-2014/11

75.	H. Firouzjahi, J. - Ouk Gong and M.h. Namjoo Scale-dependent hemispherical asymmetry from general initial state during inflation JCAP 2014 (2014), 16  [abstract] Code: IPM/A-2014/10

76.	H.R. Afshar, H. Firouzjahi and S. Parvizi dS solutions with co-dimension 2 branes in six dimensions Class.Quant.Grav (2013),   [abstract] Code: IPM/A-2014/25

77.	M. Alishahiha, H. Firouzjahi, K. Koyama and M.H. Namjoo Cosmological perturbations in inflationary models with anisotropic space-time scaling in a Lifshitz background Phys. Rev. D (2013),   [abstract] Code: IPM/A-2014/24

78.	X. Chen, H. Firouzjahi, Eiichiro. Komatsu, M.H. Namjoo and M. Sasaki In-in and δN calculations of the bispectrum from non-attractor single-field inflation JCAP (2013),   [abstract] Code: IPM/A-2014/22

79.	A. Abolhasani, R. Emami, J. T. Firouzjaee and H. Firouzjahi δN formalism in anisotropic inflation and large anisotropic bispectrum and trispectrum JCAP (2013),   [abstract] Code: IPM/A-2013/34

80.	M.H. Namjoo, S. Baghram and H. Firouzjahi Hemispherical Asymmetry and Local non-Gaussianity: a Consistency Condition Phys. Rev. D (2013), 13  [abstract] Code:

81.	S. Baghram, M.H. Namjoo and H. Firouzjahi Large Scale Anisotropic Bias from Primordial Non-Gaussianity A-2013/23 JCAP 2013 (2013),   [abstract] Code: IPM/A-2013/23

82.	C. Xingang, H. Firouzjahi, M.H. Namjoo and M. Sasaki A single field inflation model with large local non-Gaussianity Europhys. Lett. 102 (2013),   [abstract] Code: IPM/A-2012/21

83.	X. Chen, H. Firouzjahi, M.H. Namjoo and . Sasaki Fluid Inflation JCAP (2013), 13  [abstract] Code: IPM/A-2013/25

84.	H. Assadullahi, H. Firouzjahi, M H. Namjoo and D. Wands Modulated curvaton decay JCAP (2013), 041  [abstract] Code: IPM/A-2012/24

85.	R. Emami and H. Firouzjahi Curvature Perturbations in Anisotropic Inflation with Symmetry Breaking JCAP (2013),   [abstract] Code: IPM/A-2012/017

86.	M H. Namjoo, M. Sasaki and H. Firouzjahi Violation of non-Gaussianity consistency relation in a single field inflationary model Europhys. Lett. 101 (2013), 39001  [abstract] Code: IPM/A-2012/015

87.	H. Firouzjahi, A. Green, K. Malik and M. Zarei The Effect of Curvaton Decay on the Primordial Power Spectrum Phys. Rev. D (2012),   [abstract] Code: IPM/A-2012/014

88.	H. Assadullahi, H. Firouzjahi, M. Namjoo and D. Wands Curvaton and the inhomogeneous end of inflation JCAP (2012), 024  [abstract] Code: IPM/A-2012/012

89.	M. Namjoo, H. Firouzjahi and M. Sasaki Multiple Inflationary Stages with Varying Equation of State JCAP (2012), 018  [abstract] Code: IPM/A-2012/012

90.	A. Abolhasai, H. Firouzjahi and M. Noorbala Effects of Variable Newton Constant During Inflation Phys. Rev. D 86 (2012),   [abstract] Code: IPM/A-2012/010

91.	A. A. Abolhasani, H. Firouzjahi, Sh. Khosravi and M. Sasaki Local Features with Large Spike non-Gaussianities during Inflation JCAP 11 (2012), 012  [abstract] Code: IPM/P-2012/011

92.	R. Emami and H. Firouzjahi Issues on Primordial Anisotropies Generated at the End of Inflation  (Preprint) [abstract] arXive.org link: arXiv:1111.1919 [ abs, src, ps, others], cited by Code: IPM/P-2011/049

93.	A. A. Abolhasani, H. Firouzjahi and M. Sasaki Curvature Perturbation and Waterfall Dynamics in Hybrid Inflation JCAP 10 (2011), 015  [abstract] arXive.org link: 1106.6315 [ abs, src, ps, others], cited by Code: IPM/P-2011/003

94.	M. Alishahiha, H. Firouzjahi and M.H. Namjoo DBI Lifshitz Inflation JCAP 08 (2011), 028  [abstract] arXive.org link: 1103.2919 [ abs, src, ps, others], cited by Code: IPM/P-2011/006

95.	H. Firouzjahi and S. Khoeini-Moghaddam Fields Annihilation and Particles Creation in DBI Inflation JCAP 1102 (2011), 012  [abstract] arXive.org link: arXiv:1011.4500 [ abs, src, ps, others], cited by Code: IPM/P-2010/047

96.	A.A. Abolhasani, H. Firouzjahi and M.H. Namjoo Curvature Perturbations and non-Gaussianities from Waterfall Phase Transition during Inflation Classical Quant. Grav. 28 (2011), 075009   [abstract] arXive.org link: arXiv:1010.6292 [ abs, src, ps, others], cited by Code: IPM/P-2010/044

97.	R. Emami, H. Firouzjahi, S.M.S. Movahed and M. Zarei Anisotropic Inflation from Charged Scalar Fields JCAP 1102 (2011), 005   [abstract] arXive.org link: arXiv:1010.5495 [ abs, src, ps, others], cited by Code: IPM/P-2010/043

98.	A.A. Abolhasani and H. Firouzjahi No Large Scale Curvature Perturbations during Waterfall of Hybrid Inflation Phys. Rev. D 83 (2011), 063513   [abstract] arXive.org link: arXiv:1005.2934 [ abs, src, ps, others], cited by Code: IPM/P-2010/018

99.	F. Firouzjahi, S. Khoeini-Moghaddam and S. Khosravi Cosmic Strings Collision in Cosmological Backgrounds Phys. Rev. D 81 (2010), 123506  [abstract] arXive.org link: arXiv:1004.0068 [ abs, src, ps, others], cited by Code: IPM/P-2010/019

100.	D . Battefeld, T. Battefeld, H. Firouzjahi and N. Khosravi Brane Annihilations during Inflation JCAP 07 (2010), 009  [abstract] arXive.org link: arXiv:1004.1417 [ abs, src, ps, others], cited by Code: IPM/P-2010/013

101.	A.A. Abolhasani, H. Firouzjahi and M.M. Sheikh-Jabbari Tachyonic Resonance Preheating in Expanding Universe Phys. Rev. D 81 (2010), 043524  [abstract] Code: IPM/P-2009/052

102.	A. Ashoorioon,, H. Firouzjahi and M.M. Sheikh-Jabbari Matrix Inflation and the Landscape of its Potential JCAP 05 (2010), 002  [abstract] arXive.org link: arXiv:0911.4284 [ abs, src, ps, others], cited by Code: IPM/P-2009/049

103.	R. Emami, H. Firouzjahi and M. Sadegh Movahed Inflation from Charged Scalar and Primordial Magnetic Fields? Phys. Rev. D 81 (2010), 083526  [abstract] arXive.org link: arXiv:0908.4161 [ abs, src, ps, others], cited by Code: IPM/P-2009/044

104.	H. Firouzjahi, J. Karouby, S. Khosravi and R. Brandenberger Zipping and Unzipping of Cosmic String Loops in Collision Phys. Rev. D 80 (2009), 083508  [abstract] arXive.org link: arXiv:0907.4986 [ abs, src, ps, others], cited by Code: IPM/P-2009/043

105.	A. Ashoorioon , H. Firouzjahi and M.M. Sheikh-Jabbari M-Flation: Inflation From Matrix Valued Scalar Fields JCAP 06 (2009), 018  [abstract] arXive.org link: arXiv:0903.1481 [ abs, src, ps, others], cited by Code: IPM/P-2009/009

106.	R. Brandenberger, H . Firouzjahi, J. Karouby and S. Khosravi Gravitational Radiation by Cosmic Strings in a Junction JCAP 01 (2009), 008  [abstract] arXive.org link: arXiv:0810.4521 [ abs, src, ps, others], cited by Code: IPM/P-2008/060

107.	F . Chen and H. Firouzjahi Dynamics of D3-D7 Brane Inflation in Throats JHEP 11 (2008), 017  [abstract] arXive.org link: arXiv:0807.2817 [ abs, src, ps, others], cited by Code: IPM/P-2008/059