# Contributed Presentation

**Matching LTB and FRW spacetimes through a null hypersurface**, gr-qc/0702132 (co-author, S. Khakshournia)-
**Structured FRW universe based on junction along the past light cone**, astro-ph/0702282 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami) -
**Modification of averaging process in GR: Case study flat LTB**, arXive: 0709.2558 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami) -
**Structured FRW universe leads to acceleration: a non-perturbative approach**, astro-ph/0512605 -
**On the Thin Wall Limit of Thick Planer Domain Walls**, 2005, Submitted to Gravitation and General relativity, gr- qc/0505073 (Co- author: Sima Ghassemi, Samand Khakshournia) -
**Casimir Energy for Self-interacting Scalar Field in a Spherical Shell**, 2002, hep-th/0201213 (Co-author: M. Setare). -
**Casmir Action for Self-Interacting Scalar Field in 3-Spherical Shell**, 2002, hep-th/0201213 (Co-author: M. Setare). -
**Junction Equations for Two General Spherically Symmetric Spacetimes and the Distributional Method**, 1999, hep-th/ 9911076 (Coauthor: S. Khakshournia). -
**Application of Colombeau’s Generalized Functions to Cosmological Models with Signature Change**(Co-author: K. Nozari). Proceeding of ISMC, Potsdam, March 30-April 4, 1998, M. Rainer and H.-J. Schmidt (Eds), World Scientific PC, Singapore, p. -
**Rotation of Plane of Polarization of an Electromagnetic Wave Progagating over Cosmological Distances in “Finite Rotating Universe” Scenario**, gr-qc/9710028. (Coauthor: K. Nozari). Paper presented at the seminar “Kosmische Rotation”. Berlin 1998. **Rotation of Plane of Polarization of an Electromagnetic wave Progagating over Cosmological Distances in “Finite Rotating Universe” Scenario**, Abstracts of Contributed Papers, 1997, Pune, India.-
**Distributional Approach to Signature Change**, Abstracts of Contributed Papers, GRI5, Pune, India. -
**Wave Function of a Decupling Model of the Universe**, Abstracts of Contributed Papers, GRI5, 1997, Pune, India. -
**A new Class of Inhomogeneous Cosmological Solutions of Einsteins Equations**, Preprint, Potsdam University, Math. Inst., 1996. -
**Equivalent Lagrangians and Quantization**, Preprint, Potsdam University, Math Inst., 1996. -
**A New Class Of Inhomogenuous Solutions**, Abstracts of Contributed papers, Intern. Symposium on Cosmology, Madras, India, 1994. **Cylindrically Symmetric Thin Walls, Abstracts of Contributed Papers**, Intern. Conf. On Grav. & Cosmology, Ahmedabad, India, 1991.-
**Gravitational field of Static Domain Walls**, Sharif University of Technology Report, 1990. -
**Equivalence of Transport- and Radar Synchrony in General relativity**. Abstracts of Contributed Papers, GR12, 1989. -
**Test Theory of Special Relativity: What It Is and Why We Need It**, 1988, ICTP Internal Report, IC/88/55. -
**Distribution Function of a Collisionless Gas in the Most Symmetric Space – Times**. Abstracts of Contributed Papers, Intern. Conf. On Grav. & Cosmology, Goa, India, 14-19 Dec. 1987. -
**Introduction to Cosmology, Paper Presented at Spring School on Cosmology**, Amir-Kabir University of Technology, Tehran, Iran, 1986. **Distribution Function of a Dilute Gas In de Sitter Space-Time**, Abstracts of Contributed Papers GR11, 1986.-
**Finite Fluid Spheres are too Rigid to be Purturbed.**Abstracts of Contributed Papers, GR9, Vol. 2, 1980. -
**Alternative Two-Tensor Theory of Gravitation**. Abstracts of Contributed Papers, Topical Meeting on Gravitation and Field Theory, 13-16 July, 1971, ICTP. -
**Structured FRW universe based on junction along the past light cone**, astro-ph/0702282 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami) -
**Modification of averaging process in GR: Case study flat LTB**, arXive: 07092558 (co-authors: Sh Khosravi, E. Kourkchi, and Yashar Akrami) -
**Structured FRW universe leads to acceleration: a non-perturbative approach**, astro-ph/0512605 -
**On the Thin Wall Limit of Thick Planer Domain Walls**, 2005, Submitted to Gravitation and General relativity, gr- qc/0505073 (Co- author: Sima Ghassemi, Samand Khakshournia) -
**Casimir Energy for Self-interacting Scalar Field in a Spherical Shell**, 2002, hep-th/0201213 (Co-author: M. Setare). -
**Casmir Action for Self-Interacting Scalar Field in 3-Spherical Shell**, 2002, hep-th/0201213 (Co-author: M. Setare). -
**Junction Equations for Two General Spherically Symmetric Spacetimes and the Distributional Method**, 1999, hep-th/ 9911076 (Coauthor: S. Khakshournia). -
**Application of Colombeau’s Generalized Functions to Cosmological Models with Signature Change**(Co-author: K. Nozari). Proceeding of ISMC, Potsdam, March 30-April 4, 1998, M. Rainer and H.-J. Schmidt (Eds), World Scientific PC, Singapore, p. -
**Rotation of Plane of Polarization of an Electromagnetic Wave Progagating over Cosmological Distances in “Finite Rotating Universe” Scenario**, gr-qc/9710028. (Coauthor: K. Nozari). Paper presented at the seminar “Kosmische Rotation”. Berlin 1998. -
**Rotation of Plane of Polarization of an Electromagnetic wave Progagating over Cosmological Distances in “Finite Rotating Universe” Scenario**, Abstracts of Contributed Papers, 1997, Pune, India. -
**Distributional Approach to Signature Change**, Abstracts of Contributed Papers, GRI5, Pune, India. **Wave Function of a Decupling Model of the Universe**, Abstracts of Contributed Papers, GRI5, 1997, Pune, India.**A new Class of Inhomogeneous Cosmological Solutions of Einsteins Equations**, Preprint, Potsdam University, Math. Inst., 1996.-
**Equivalent Lagrangians and Quantization**, Preprint, Potsdam University, Math Inst., 1996. -
**A New Class Of Inhomogenuous Solutions**, Abstracts of Contributed papers, Intern. Symposium on Cosmology, Madras, India, 1994. -
**Cylindrically Symmetric Thin Walls**, Abstracts of Contributed Papers, Intern. Conf. On Grav. & Cosmology, Ahmedabad, India, 1991. **Gravitational field of Static Domain Walls**, Sharif University of Technology Report, 1990.-
**Equivalence of Transport- and Radar Synchrony in General relativity**. Abstracts of Contributed Papers, GR12, 1989. -
**Test Theory of Special Relativity: What It Is and Why We Need It**, 1988, ICTP Internal Report, IC/88/55. -
**Distribution Function of a Collisionless Gas in the Most Symmetric Space – Times**. Abstracts of Contributed Papers, Intern. Conf. On Grav. & Cosmology, Goa, India, 14-19 Dec. 1987. **Introduction to Cosmology, Paper Presented at Spring School on Cosmology**, Amir-Kabir University of Technology, Tehran, Iran, 1986.**Distribution Function of a Dilute Gas In de Sitter Space-Time**, Abstracts of Contributed Papers GR11, 1986.**Finite Fluid Spheres are too Rigid to be Purturbed**. Abstracts of Contributed Papers, GR9, Vol. 2, 1980.**Alternative Two-Tensor Theory of Gravitation**. Abstracts of Contributed Papers, Topical Meeting on Gravitation and Field Theory, 13-16 July, 1971, ICTP.