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We study homomorphic hash functions into SL(2,q), the 2x2 matrices with determinant 1 over the field with $q$ elements. Modulo a well supported number theoretic hypothesis, which holds in particular for concrete homomorphisms proposed thus…

Cryptography and Security · Computer Science 2016-07-26 Ciaran Mullan , Boaz Tsaban

The current paper presents a new quantum algorithm for finding multicollisions, often denoted by $\ell$-collisions, where an $\ell$-collision for a function is a set of $\ell$ distinct inputs that are mapped by the function to the same…

Quantum Physics · Physics 2019-11-11 Akinori Hosoyamada , Yu Sasaki , Seiichiro Tani , Keita Xagawa

A Hamiltonian eikonal model for the multiple production in high energy hadron hadron collisions is presented and worked out in the aim of providing a simple frame for many different observables of these processes. The Hamiltonian…

High Energy Physics - Phenomenology · Physics 2007-05-23 Giorgio Calucci , Daniele Treleani

In this article we present a new formulation and an associated algorithm for the simultaneous numerical simulation of multiple condensed phase explosives in direct contact with each other, which may also be confined by (or interacting with…

Computational Physics · Physics 2022-03-14 Riccardo Demattè , Louisa Michael , Nikolaos Nikiforakis

The nucleus-nucleus potential is calculated in the frame work of the double folding model (DFM) to obtain the Coulomb barrier parameters (barrier position and height), starting from M3Y-Reid nucleon-nucleon interaction and realistic nuclear…

Nuclear Theory · Physics 2020-01-22 M. Ismail , A. Y. Ellithi , A. Adel , A. R. Abdulghany

This work contains two major parts: comprehensively studying the security notions of cryptographic hash functions against quantum attacks and the relationships between them; and revisiting whether Merkle-Damgard and related iterated hash…

Quantum Physics · Physics 2019-02-26 Ben Hamlin , Fang Song

The influence of inelastic hydrogen atom collisions on non-LTE spectral line formation has been, and remains to be, a significant source of uncertainty for stellar abundance analyses, due to the difficulty in obtaining accurate data for…

Solar and Stellar Astrophysics · Physics 2015-05-27 P. S. Barklem , A. K. Belyaev , M. Guitou , N. Feautrier , F. X. Gadea , A. Spielfiedel

Widely used Lagrangian numerical codes that compute the physical interaction with neighbouring resolution elements (particles), duplicate the calculation of the interaction between pairs of particles. We developed an algorithm that reduces…

Instrumentation and Methods for Astrophysics · Physics 2020-12-07 Isaac Alonso Asensio , Claudio Dalla Vecchia

The processes of open and hidden charm production in $NN$ collisions and of open charm production in $\gamma N$ collisions are studied. The near-threshold cross section is predicted and polarization phenomena are calculated in frame of an…

High Energy Physics - Phenomenology · Physics 2007-05-23 Egle Tomasi-Gustafsson

Consistent Hashing functions are widely used for load balancing across a variety of applications. However, the original presentation and typical implementations of Consistent Hashing rely on randomised allocation of hash codes to keys which…

Data Structures and Algorithms · Computer Science 2015-03-19 Matthew Sackman

We investigate the production of $\Omega_{ccc}$ baryon in high energy nuclear collisions via quark coalescence mechanism. The wave function of $\Omega_{ccc}$ is solved from the Schr\"odinger equation for the bound state of three charm…

High Energy Physics - Phenomenology · Physics 2015-05-20 Hang He , Yunpeng Liu , Pengfei Zhuang

This paper suggests a message authentication scheme, which can be efficiently used for secure digital signature creation. The algorithm used here is an adjusted union of the concepts which underlie projective geometry and group structure on…

Cryptography and Security · Computer Science 2017-08-17 Abhinav Aggarwal

In this note, we provide the first 22-step collisions for SHA-256 and SHA-512. Detailed technique of generating these collisions will be provided in the next revision of this note.

Cryptography and Security · Computer Science 2008-03-11 Somitra Kumar Sanadhya , Palash Sarkar

We use a recent O(alpha_s^2) calculation of the differential cross section for the production of heavy quarks in e+e- annihilation to compute a few moments of the heavy quark single-inclusive production cross section. We verify that,…

High Energy Physics - Phenomenology · Physics 2014-11-17 P. Nason , C. Oleari

Haskell functions are defined as a series of clauses consisting of patterns that are matched against the arguments in the order of definition. In case an input is not matched by any of the clauses, an error occurs. Therefore it is desirable…

Programming Languages · Computer Science 2019-09-11 Pavel Kalvoda , Tom Sydney Kerckhove

We consider the production of a heavy quark pair in proton-proton collisions. For bottom and charm quarks, the final state invariant mass is typically much smaller than the collider energy (e.g. at the LHC), so that high-energy logarithms…

High Energy Physics - Phenomenology · Physics 2023-03-21 Federico Silvetti , Marco Bonvini

Iterated hash functions process strings recursively, one character at a time. At each iteration, they compute a new hash value from the preceding hash value and the next character. We prove that iterated hashing can be pairwise independent,…

Databases · Computer Science 2012-01-27 Daniel Lemire

We have constructed an empirical formulae for the fusion and interaction barriers using experimental values available till date. The fusion barriers so obtained have been compared with different model predictions based on the proximity,…

Nuclear Theory · Physics 2022-05-04 T. Nandi , D. K. Swami , P. S. Damodara Gupta , Yash Kumar , S. Chakraborty , H. C. Manjunatha

Thermodynamical description of the system created during high energy collision requires a proper thermodynamical framework to study the distribution of particles. In this work, we have attempted to explain the transverse momentum spectra of…

High Energy Physics - Phenomenology · Physics 2023-01-31 Rohit Gupta , Shubhangi Jain , Satyajit Jena

Many new particles, mostly hadrons, are produced in high energy collisions between atomic nuclei. The most popular models describing the hadron production process are based on the creation, evolution and decay of resonances, strings or…

High Energy Physics - Phenomenology · Physics 2023-03-14 Evgeny Andronov , Magdalena Kuich , Marek Gaździcki