Results 81 to 90 of about 55,721 (181)

On the evaluation of a certain class of Feynman diagrams in x-space: Sunrise-type topologies at any loop order

open access: yes, 2005
We review recently developed new powerful techniques to compute a class of Feynman diagrams at any loop order, known as sunrise-type diagrams. These sunrise-type topologies have many important applications in many different fields of physics and we ...
A.A. Pivovarov   +128 more
core   +1 more source

A note on the asymptotics of the modified Bessel functions on the Stokes lines [PDF]

open access: yes, 2017
We employ the exponentially improved asymptotic expansions of the confluent hypergeometric functions on the Stokes lines discussed by the author [Appl. Math. Sci. 7 (2013) 6601–6609] to give the analogous expansions of the modified Bessel functions Iν(z)
Paris, R. B.
core  

Properties and integral inequalities of P-superquadratic functions via multiplicative calculus with applications

open access: yesBoundary Value Problems
This manuscript explores the idea of a multiplicatively P-superquadratic function and its properties. Utilizing these properties, we derive the inequalities of Hermite–Hadamard type for such functions in the framework of multiplicative calculus.
Dawood Khan   +2 more
doaj   +1 more source

Summed Series Involving 1F2 Hypergeometric Functions

open access: yesMathematics
Summation of infinite series has played a significant role in a broad range of problems in the physical sciences and is of interest in a purely mathematical context.
Jack C. Straton
doaj   +1 more source

Exact BPS black hole microstate counting from holographic conformal quantum mechanics

open access: yesJournal of High Energy Physics
In this note, we develop a prescription for describing BPS black hole microstates in terms of a holographic conformal quantum mechanics (CQM) model dual to the near-horizon AdS 2 geometry of the black hole.
Gabriel Lopes Cardoso, Suresh Nampuri
doaj   +1 more source

Reflection formulas for order derivatives of Bessel functions

open access: yes, 2018
From new integral representations of the $n$-th derivative of Bessel functions with respect to the order, we derive some reflection formulas for the first and second order derivative of $J_{\nu }\left( t\right) $ and $% Y_{\nu }\left( t\right) $ for ...
González-Santander, J. L.
core  

Fractional Kaiser Window With Application to Finite Impulse Response Digital Filter Design

open access: yesIEEE Access
This study introduces a new adjustable window derived from the recently proposed fractional modified Bessel function of the first kind with zero order. The proposed window, referred to as the fractional Kaiser window in this study, is obtained using the ...
Kemal Avci
doaj   +1 more source

Naprężenia, przemieszczenia i temperatura w ograniczonym ośrodku sprężystym przy uwzględnieniu sprzężenia termomechanicznego

open access: yesEngineering Transactions, 1968
The mass forces are disregarded in the present paper. By applying the method devised by W. Nowacki [1] partial separation of the equations of e equations of thermoelasticity is achieved by generalizing Galerkin's function to the case of thermodynamical ...
J. Stefaniak
doaj  

Phase Offset Aided Index Modulation for UCA-Based OAM Communication

open access: yesIEEE Access
In this paper, a novel phase offset (PO)-aided index modulation (IM) for orbital angular momentum (OAM) communication, called OAM-PO-IM, is proposed to enhance capacity.
Hye Yeong Lee   +2 more
doaj   +1 more source

Transient and Steady-State Analysis of an M/PH2/1 Queue with Catastrophes

open access: yesAxioms
In the paper, we consider the PH2-distribution, which is a particular case of the PH-distribution. In other words, The first service phase is exponentially distributed, and the service rate is μ. After the first service phase, the customer can to go away
Youxin Liu   +3 more
doaj   +1 more source

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