Zobrazeno 1 - 10
of 39
pro vyhledávání: '"K. V. Pavan"'
Publikováno v:
The Egyptian Journal of Radiology and Nuclear Medicine, Vol 55, Iss 1, Pp 1-8 (2024)
Abstract Background Conventionally, diuretic isotope renogram is used to establish and quantify severity of the obstruction in pelvi-ureteric junction obstruction. Doppler ultrasonography too assesses obstruction by evaluating the resistive index (RI
Externí odkaz:
https://doaj.org/article/c7196fc9744e4a6fa51cc1916f265d8b
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 3, Pp 1-34 (2019)
Abstract We show that a natural spinor-helicity formalism that can describe massive scattering amplitudes exists in D = 6 dimensions. This is arranged by having helicity spinors carry an index in the Dirac spinor 4 of the massive little group, SO(5)
Externí odkaz:
https://doaj.org/article/024fdabb9ae9422e8467ad5805d05939
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 1, Pp 1-40 (2018)
Abstract We contrast some aspects of various SYK-like models with large-N melonic behavior. First, we note that ungauged tensor models can exhibit symmetry breaking, even though these are 0+1 dimensional theories. Related to this, we show that when g
Externí odkaz:
https://doaj.org/article/d5ac7c36a307427d8b322e4faff40683
Autor:
Chethan Krishnan, K. V. Pavan Kumar
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 10, Pp 1-16 (2017)
Abstract We suggest that holographic tensor models related to SYK are viable candidates for exactly (ie., non-perturbatively in N ) solvable holographic theories. The reason is that in these theories, the Hilbert space is a spinor representation, and
Externí odkaz:
https://doaj.org/article/ec8fe2984cb442aba62a7ce2f190e8d3
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 6, Pp 1-26 (2017)
Abstract We further explore the connection between holographic O(n) tensor models and random matrices. First, we consider the simplest non-trivial uncolored tensor model and show that the results for the density of states, level spacing and spectral
Externí odkaz:
https://doaj.org/article/15481adabaa54ee2850c1874744f23f4
We show that a natural spinor-helicity formalism that can describe massive scattering amplitudes exists in $D=6$ dimensions. This is arranged by having helicity spinors carry an index in the Dirac spinor {\bf 4} of the massive little group, $SO(5) \s
Externí odkaz:
http://arxiv.org/abs/1810.11803
Autor:
Krishnan, Chethan, Kumar, K. V. Pavan
Publikováno v:
Advances in Theoretical and Mathematical Physics, Volume 23 (2019), Number 7
Building on a strategy introduced in arXiv:1706.05364, we present exact analytic expressions for all the singlet eigenstates and eigenvalues of the simplest non-linear ($n=2, d=3$) gauged Gurau-Witten tensor model. This solves the theory completely.
Externí odkaz:
http://arxiv.org/abs/1804.10103
Autor:
Krishnan, Chethan, Kumar, K. V. Pavan
Publikováno v:
Phys. Rev. Lett. 120, 201603 (2018)
Gauged tensor models are a class of strongly coupled quantum mechanical theories. We present the exact analytic solution of a specific example of such a theory: namely the smallest colored tensor model due to Gurau and Witten that exhibits non-linear
Externí odkaz:
http://arxiv.org/abs/1802.02502
Publikováno v:
J. Math. Phys. 60, 021701 (2019)
The construction of fully (anti-)symmetric states with many particles, when the single particle state carries multiple quantum numbers, is a problem that seems to have not been systematically addressed in the literature. A quintessential example is t
Externí odkaz:
http://arxiv.org/abs/1711.09811
We contrast some aspects of various SYK-like models with large-$N$ melonic behavior. First, we note that ungauged tensor models can exhibit symmetry breaking, even though these are 0+1 dimensional theories. Related to this, we show that when gauged,
Externí odkaz:
http://arxiv.org/abs/1709.06498