Results 21 to 30 of about 148,082 (308)

Spinning S-matrix bootstrap in 4d

open access: yesJournal of High Energy Physics, 2022
We review unitarity and crossing constraints on scattering amplitudes for particles with spin in four dimensional quantum field theories. As an application we study two to two scattering of neutral spin 1/2 fermions in detail.
Aditya Hebbar   +2 more
doaj   +1 more source

Towards the non-perturbative cosmological bootstrap

open access: yesJournal of High Energy Physics, 2023
We study quantum field theory on a de Sitter spacetime dS d+1 background. Our main tool is the Hilbert space decomposition in irreducible unitary representations of its isometry group SO(d + 1, 1). As the first application of the Hilbert space formalism,
Matthijs Hogervorst   +2 more
doaj   +1 more source

Hamming index of graphs with respect to its incidence matrix

open access: yesIndonesian Journal of Combinatorics, 2022
Let B(G) be the incidence matrix of a graph G. The row in B(G)corresponding to a vertex v, denoted by s(v) is the string which belongs to ℤm2, a set of m-tuples over a field of order two.
Harishchandra S. Ramane   +6 more
doaj   +1 more source

Putting string /string duality to the test [PDF]

open access: yesNuclear Physics B, 1995
After simultaneous compactification of spacetime and worldvolume on $K3$, the $D=10$ heterotic fivebrane with gauge group $SO(32)$ behaves like a $D=6$ heterotic string with gauge group $SO(28) \times SU(2)$, but with Kac--Moody levels different from those of the fundamental string.
Duff, M. J., Minasian, R.
openaire   +2 more sources

Mechanisms of the Flying Chain Fountain

open access: yesFrontiers in Physics, 2018
When a chain is released by one end from a container, it forms a striking arch extending well above the container. This phenomenon is caused by the famous Mould effect and is explained by an anomalous supply of momentum from the container, causing an ...
Eirik G. Flekkøy   +2 more
doaj   +1 more source

Four-Dimensional String/String Duality [PDF]

open access: yesNuclear Physics B, 1994
We present supersymmetric soliton solutions of the four-dimensional heterotic string corresponding to monopoles, strings and domain walls. These solutions admit the $D=10$ interpretation of a fivebrane wrapped around $5$, $4$ or $3$ of the $6$ toroidally compactified dimensions and are arguably exact to all orders in $α'$. The solitonic string solution
Duff, M. J., Khuri, Ramzi R.
openaire   +2 more sources

Torsion in String-Inspired Cosmologies and the Universe Dark Sector

open access: yesUniverse, 2021
Several aspects of torsion in string-inspired cosmologies are reviewed. In particular, its connection with fundamental, string-model independent, axion fields associated with the massless gravitational multiplet of the string are discussed.
Nick E. Mavromatos
doaj   +1 more source

String Abstractions for String Verification [PDF]

open access: yes, 2011
Verifying string manipulating programs is a crucial problem in computer security. String operations are used extensively within web applications to manipulate user input, and their erroneous use is the most common cause of security vulnerabilities in web applications.
Fang Yu 0001   +2 more
openaire   +2 more sources

Open strings [PDF]

open access: yesPhysics Reports, 2002
This review is devoted to open strings, and in particular to the often surprising features of their spectra. It follows and summarizes developments that took place mainly at the University of Rome ``Tor Vergata'' over the last decade, and centred on world-sheet aspects of the constructions now commonly referred to as ``orientifolds''.
ANGELANTONJ, Carlo, A. SAGNOTTI
openaire   +4 more sources

Search strings for finding SDG-related research, Bergen-approach.

open access: yes, 2023
<h2>Summary</h2> <p>See the repository readme for general information about this work: https://github.com/SDGforskning/sdg-strings/blob/v2.0.0/README.md</p> <p>This release includes improvements to all SDG search strings ...
Armitage, Caroline S   +6 more
core   +1 more source

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