Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Krishna, K Gopala"'
We give closed form expressions for the numbers of multi-rooted plane trees with specified degrees of root vertices. This results in an infinite number of integer sequences some of which are known to have an alternative interpretation. We also propos
Externí odkaz:
http://arxiv.org/abs/2301.09765
Akademický článek
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Publikováno v:
E3S Web of Conferences, Vol 540, p 06011 (2024)
Multilevel inverters are widely used in many applications due to their superior performance over conventional inverter. However, due to increasing number of switches in existed multilevel inverts, the cost, size and losses are increasing continuously
Externí odkaz:
https://doaj.org/article/88c17d7c500e4ddf9b283bd162a95546
We consider two seemingly unrelated problems, the calculation of the WKB expansion of the harmonic oscillator wave functions and the counting the number of Feynman diagrams in QED or in many-body physics and show that their solutions are both encoded
Externí odkaz:
http://arxiv.org/abs/1802.01773
Publikováno v:
Transactions of the Indian Institute of Metals; Jul2024, Vol. 77 Issue 7, p1805-1814, 10p
Publikováno v:
Nucl.Phys. B859 (2012) 143-158
We study the degeneracy of quarter BPS dyons in N =4 type II compactifications of string theory. We find that the genus-two Siegel modular forms generating the degeneracies of the quarter BPS dyons in the type II theories can be expressed in terms of
Externí odkaz:
http://arxiv.org/abs/1106.1318
Autor:
Krishna, K. Gopala
We study the Z_5-orbifolding of the CHL string theory by explicitly constructing the modular form tilde{Phi}_2 generating the degeneracies of the 1/4-BPS states in the theory. Since the additive seed for the sum form is a weak Jacobi form in this cas
Externí odkaz:
http://arxiv.org/abs/1011.2168
Publikováno v:
JHEP 1005:014,2010
We show that the generating function of electrically charged 1/2-BPS states in N=4 supersymmetric Z_N-CHL orbifolds of the heterotic string on T^6 are given by multiplicative eta-products. The eta-products are determined by the cycle shape of the cor
Externí odkaz:
http://arxiv.org/abs/0907.1410
Akademický článek
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Publikováno v:
JHEP 0904:032,2009
We provide evidence for the existence of a family of generalized Kac-Moody(GKM) superalgebras, G_N, whose Weyl-Kac-Borcherds denominator formula gives rise to a genus-two modular form at level N, Delta_{k/2}(Z), for (N,k)=(1,10), (2,6), (3,4), and po
Externí odkaz:
http://arxiv.org/abs/0807.4451