### 10845321 results

Contributors: Anna Besprozvannaya, David J. Tannor

Date: 2019-12-05

... Abstract A modified fast cosine transform (FCT) algorithm is presented featuring the following three properties: (1) the entire calculation is performed using arrays half the size of what would be required using a common fast Fourier transform (FFT); (2) the result of the FCT is identical to that which would be obtained using an FFT and an array double the size; (3) the FCT is its own inverse. The algorithm requires a minor modification to the FCT algorithm in Numerical Recipes by W.H. Press et al., w... Title of program: ROFT/REFT/COFT/CEFT Catalogue Id: ABTX_v1_0 Nature of problem In many physical applications one is interested in obtaining a Fourier transform of a function having a particular reflection symmetry using only half of the grid points, thus saving both computation time and space without any loss of information. Versions of this program held in the CPC repository in Mendeley Data ABTX_v1_0; ROFT/REFT/COFT/CEFT; 10.1016/0010-4655(91)90276-Q This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: A.I Ogoyski, Shigeo Kawata, T Someya

Date: 2019-12-05

... Abstract For computer simulations on heavy ion beam (HIB) irradiation on a spherical fuel pellet in heavy ion fusion (HIF) the code OK1 was developed and presented in [Comput. Phys. Commun. 157 (2004) 160–172]. The new code OK2 is a modified upgraded computer program for more common purposes in research fields of medical treatment, material processing as well as HIF. OK2 provides computational capabilities of a three-dimensional ion beam energy deposition on a target with an arbitrary shape and struct... Title of program: OK2 Catalogue Id: ADST_v2_0 [ADTZ] Nature of problem In research areas of HIF (Heavy Ion Beam Inertial Fusion) energy [1-4] and medical material sciences [5], ion energy deposition profiles should be evaluated and calculated precisely. Due to a favorable energy deposition behavior of ions in matter [1-4] it is expected that ion beams would be one of the preferable candidates in various fields including HIF and material processing. Especially in HIF for a successful fuel ignition and a sufficient fusion energy release, a stringent requirement is im ... Versions of this program held in the CPC repository in Mendeley Data ADST_v1_0; OK1; 10.1016/S0010-4655(03)00492-2 ADST_v2_0; OK2; 10.1016/j.cpc.2004.04.008 ADST_v3_0; OK3; 10.1016/j.cpc.2010.03.016 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: Alfred T. Chivers

Date: 2019-12-05

... Title of program: ASYM VERSION FOR ICL 1900 Catalogue Id: ACRK_v1_0 Nature of problem This is a new version of the program by Norcross (see CPC 1 (1969) 88). The program has been changed to conform with ASA Fortran and to become a compatible unit for use with the atomic scattering packages being run on the Queen's University ICL 1907 Versions of this program held in the CPC repository in Mendeley Data ACRK_v1_0; ASYM VERSION FOR ICL 1900; 10.1016/0010-4655(73)90078-7 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

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Contributors: T. Loke, J.B. Wang, Y.H. Chen

Date: 2019-12-05

... Abstract The software package Qcompiler (Chen and Wang 2013) provides a general quantum compilation framework, which maps any given unitary operation into a quantum circuit consisting of a sequential set of elementary quantum gates. In this paper, we present an extended software OptQC, which finds permutation matrices P and Q for a given unitary matrix U such that the number of gates in the quantum circuit of U = Q^TP^T U'PQ is significantly reduced, where U? is equivalent to U up to a permutation a... Title of program: OptQC Catalogue Id: AEUA_v1_0 Nature of problem It aims to minimise the number of quantum gates required to implement a given unitary operation. Versions of this program held in the CPC repository in Mendeley Data AEUA_v1_0; OptQC; 10.1016/j.cpc.2014.07.022 AEUA_v1_3; OptQC v1.3; 10.1016/j.cpc.2016.05.028 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: Géza Tóth

Date: 2019-12-05

... Abstract A program package for MATLAB is introduced that helps calculations in quantum information science and quantum optics. It has commands for the following operations: (i) Reordering the qudits of a quantum register, computing the reduced state of a quantum register. (ii) Defining important quantum states easily. (iii) Formatted input and output for quantum states and operators. (iv) Constructing operators acting on given qudits of a quantum register and constructing spin chain Hamiltonians. (v) ... Title of program: QUBIT4MATLAB V3.0 Catalogue Id: AEAZ_v1_0 Nature of problem Subroutines helping calculations in quantum information science and quantum optics. Versions of this program held in the CPC repository in Mendeley Data AEAZ_v1_0; QUBIT4MATLAB V3.0; 10.1016/j.cpc.2008.03.007 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

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Contributors: R. Odorico

Date: 2019-12-05

... Abstract An updated version of the Monte Carlo program COJETS is presented. The program simulates p -p and p-p interactions at high energy. It covers: (i) purely hadronic production, including particles with charm, bottom and top; (ii) weak Drell-Yan production of the W and Z vector bosons; (iii) electromagnetic Drell-Yan production of charged lepton pairs. The simulation is based, at the parton level, on perturbative QCD and the Weinberg-Salam model. Partons are independently frag... Title of program: COJETS Catalogue Id: AAVR_v2_0 [ABRM] Nature of problem Simulation of QCD and the Weinberg-Salam Model in antiproton-proton and proton-proton interactions. Versions of this program held in the CPC repository in Mendeley Data AAVR_v1_0; COJETS; 10.1016/0010-4655(84)90067-5 AAVR_v2_0; COJETS; 10.1016/0010-4655(90)90094-H AAVR_v3_0; COJETS 6.23; 10.1016/0010-4655(92)90151-N This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: Martin Wiebusch

Date: 2019-12-05

... Abstract This article introduces the Mathematica package HEPMath which provides a number of utilities and algorithms for High Energy Physics computations in Mathematica. Its functionality is similar to packages like FormCalc or FeynCalc, but it takes a more complete and extensible approach to implementing common High Energy Physics notations in the Mathematica language, in particular those related to tensors and index contractions. It also provides a more flexible method for the generation of numerica... Title of program: HEPMath Catalogue Id: AEWU_v1_0 Nature of problem Automatisation of (Feynman diagrammatic) computations in High Energy Physics, representation and manipulation of tensors with symbolic indices in the Mathematica language, generation of numerical code and interface to Python. Versions of this program held in the CPC repository in Mendeley Data AEWU_v1_0; HEPMath; 10.1016/j.cpc.2015.04.022 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: A.C. Yates

Date: 2019-12-05

... Title of program: A SCAT Catalogue Id: ACQX_v1_0 Nature of problem The program calculates angular distributions (differential cross sections) and spin-polarization distributions of electrons scattered elastically by atomic targets within the framework of the static field approximation, by solving the radial Dirac equations. Versions of this program held in the CPC repository in Mendeley Data ACQX_v1_0; A SCAT; 10.1016/0010-4655(71)90050-6 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

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Contributors: J.M. MacLaren, S. Crampin, D.D. Vvedensky, R.C. Albers, J.B. Pendry

Date: 2019-12-05

... Abstract A program is presented which implements the layer Koringer-Kohn-Rostoker theory for the electronic structure of both bulk systems and those characterised by two-dimensional periodicity. The one-electron Green function is obtained by recursively assembling the layers of the system, permitting the study of interface regions embedded in otherwise perfect host materials. The program enables the calculation of self-consistent charge densities and localised states. Title of program: LKKR Catalogue Id: ABRZ_v1_0 Nature of problem To calculate electronic and magnetic properties including the density of states, total charge density, total energies and band structures of bulk crystals and planar defects such as stacking faults and grain boundaries. Versions of this program held in the CPC repository in Mendeley Data ABRZ_v1_0; LKKR; 10.1016/0010-4655(90)90035-Y This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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Contributors: Stephan Buehler, Claude Duhr

Date: 2019-12-05

... Abstract We present a new Fortran library to evaluate all harmonic polylogarithms up to weight four numerically for any complex argument. The algorithm is based on a reduction of harmonic polylogarithms up to weight four to a minimal set of basis functions that are computed numerically using series expansions allowing for fast and reliable numerical results. Title of program: Chaplin Catalogue Id: AETC_v1_0 Nature of problem Numerical evaluation of harmonic polylogarithms. Versions of this program held in the CPC repository in Mendeley Data AETC_v1_0; Chaplin; 10.1016/j.cpc.2014.05.022 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)

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