Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Zhirayr Avetisyan"'
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-44 (2022)
Abstract In our previous article Phys. Rev. Lett. 127 (2021) 271601, we announced a novel ‘democratic’ Lagrangian formulation of general nonlinear electrodynamics in four dimensions that features electric and magnetic potentials on equal footing.
Externí odkaz:
https://doaj.org/article/5a4e2b25a7e44231a77f9f6e35af6383
Autor:
Zhirayr Avetisyan, Matteo Capoferri
Publikováno v:
Mathematics, Vol 9, Iss 16, p 1936 (2021)
In this review paper, we discuss the relation between recent advances in the theory of partial differential equations and their applications to quantum field theory on curved spacetimes. In particular, we focus on hyperbolic propagators and the role
Externí odkaz:
https://doaj.org/article/feff3a6ffbad49a5802634a9e502348b
Autor:
Zhirayr Avetisyan, Alexey Karapetyants
Publikováno v:
Mathematical Methods in the Applied Sciences. 46:811-829
We introduce and study in a general setting the concept of homogeneity of an operator and, in particular, the notion of homogeneity of an integral operator. In the latter case, homogeneous kernels of such operators are also studied. The concept of ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a86ce3545ea3703a676b42b98f7dc7b
https://doi.org/10.1002/mma.8549
https://doi.org/10.1002/mma.8549
Publikováno v:
MATHEMATISCHE ZEITSCHRIFT
For a separable finite diffuse measure space $${\mathcal {M}}$$ M and an orthonormal basis $$\{\varphi _n\}$$ { φ n } of $$L^2({\mathcal {M}})$$ L 2 ( M ) consisting of bounded functions $$\varphi _n\in L^\infty ({\mathcal {M}})$$ φ n ∈ L ∞ ( M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36b5b48ea912b88cf9d88b870ff738b6
https://doi.org/10.1007/s00209-021-02734-6
https://doi.org/10.1007/s00209-021-02734-6
Autor:
Matteo Capoferri, Zhirayr Avetisyan
Publikováno v:
Mathematics, Vol 9, Iss 1936, p 1936 (2021)
MATHEMATICS
MATHEMATICS
In this review paper, we discuss the relation between recent advances in the theory of partial differential equations and their applications to quantum field theory on curved spacetimes. In particular, we focus on hyperbolic propagators and the role
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bb1b32fa7a4ca20e41b8e473195cea8
https://www.mdpi.com/2227-7390/9/16/1936
https://www.mdpi.com/2227-7390/9/16/1936
This paper is concerned with the study of linear geometric rigidity of shallow thin domains under zero Dirichlet boundary conditions on the displacement field on the thin edge of the domain. A shallow thin domain is a thin domain that has in-plane di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b61d9b12c0198059158a8ba4acbd55f3
http://arxiv.org/abs/2006.08840
http://arxiv.org/abs/2006.08840
Publikováno v:
Analysis as a tool in mathematical physics : in memory of Boris Pavlov
Analysis as a Tool in Mathematical Physics ISBN: 9783030315306
Analysis as a Tool in Mathematical Physics ISBN: 9783030315306
For a scalar elliptic self-adjoint operator on a compact manifold without boundary we have two-term asymptotics for the number of eigenvalues between 0 and λ when λ → ∞, under an additional dynamical condition. (See [3, Theorem 3.5] for an earl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55730a3e38d0be54f74945978c96aa95
https://biblio.ugent.be/publication/8752876/file/8764314
https://biblio.ugent.be/publication/8752876/file/8764314
Autor:
Zhirayr Avetisyan
The subject of the paper is the geometry and topology of cosmological spacetimes and vector bundles thereon, which are used to model physical fields propagating in the universe. Global hyperbolicity and factorization properties of the spacetime and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ca03f0e10da59897249cafd2fc38c4e
Publikováno v:
Journal of Spectral Theory. 6:695-715
This is a review paper outlining recent progress in the spectral analysis of first order systems. We work on a closed manifold and study an elliptic self-adjoint first order system of linear partial differential equations. The aim is to examine the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8051c29fb55806f7c231383c1c614ca
https://doi.org/10.4171/jst/137
https://doi.org/10.4171/jst/137
We work on a parallelizable time-orientable Lorentzian 4-manifold and prove that in this case the notion of spin structure can be equivalently defined in a purely analytic fashion. Our analytic definition relies on the use of the concept of a non-deg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d87042d69de3065b2d1cbb6baff24618
http://arxiv.org/abs/1611.08297
http://arxiv.org/abs/1611.08297