Results 181 to 190 of about 1,098 (225)

Bosonic structure of realistic SO(10) supersymmetric cosmic strings

Physical Review D, 2016
International audienceWe study the bosonic structure of F-term Nambu-Goto cosmic strings forming in a realistic SO(10) implementation, assuming standard hybrid inflation.
Allys, Erwan
exaly   +2 more sources

On the covariant quantization of tensionless bosonic strings in AdS spacetime [PDF]

Journal of High Energy Physics, 2003
The covariant quantization of the tensionless free bosonic (open and closed) strings in AdS spaces is obtained. This is done by representing the AdS space as an hyperboloid in a flat auxiliary space and by studying the resulting string constrained ...
Giulio Bonelli
exaly   +2 more sources

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Topological Symmetry of the Bosonic String

International Journal of Theoretical Physics, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kachkachi, M., Dafounansou, O., Nazah, M.   +2 more
openaire   +2 more sources

Compactification of closed bosonic strings

Physical Review Letters, 1986
The boundary conditions of the first-quantized compactified closed bosonic string constrain the eigenvalues of the zero-mode operators. Requiring that internal symmetries result from compactification, we show that the simplest boundary conditions imply that the ``left'' and ``right'' lattices must be self-dual at the first-quantized level. The one-loop
, Raby, , Slansky
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String Theory: Bosonic String

2021
What we have achieved so far is not entirely satisfactory: Supersymmetry (more precisely, the broader framework of supergravity) offers a partial solution to the weak-scale hierarchy problem. Partial refers to the fact that SUSY partners have not been discovered (yet?) and hence some fine-tuning is probably needed after all.
openaire   +1 more source

Closed strings from open bosonic strings

Physical Review D, 1989
We show that closed strings can be incorporated into a bosonic open-string theory by a suitable enlargement of the open-string Fock space. We present an explicit construction of the states in this space in terms of open-string oscillators. The couplings between closed- and open-string states are those deduced from factorization over the closed-string ...
openaire   +2 more sources

Improved model of bosonic string

Physical Review D, 1987
A model of the bosonic string is presented in which 16 additional twisted scalar fields defined on the world sheet allow the tachyonic mass to vanish and scalar fields defined on the world sheet allow the tachyonic mass to vanish and the critical dimension to be lowered to d=10.
Balbinot R., Barletta A., Venturi G.
openaire   +3 more sources

Bosonic superconducting cosmic strings

Physical Review D, 1988
We study the classical solutions of bosonic superconducting strings for quartic and Coleman-Weinberg effective potentials. We map the parameter space of solutions, and discuss and quantify back reaction of the charged condensate upon the vortex. We address the issue of the critical current and the quench transition.
, Hill, , Hodges, , Turner
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The Bosonic String

1990
The starting point of dual string theories was the scattering amplitude proposed by Veneziano in 1968 for four neutral scalar particles. The (s,t) term of such an amplitude is given by the well-known Veneziano formula (1): $${\text{A(s,t) = }}\frac{{\Gamma ( - {\alpha _{\text{s}}}){\text{ }}{\mkern 1mu} \Gamma ( - {\alpha _{\text{t}}})}}{{\Gamma ( -
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BOSONIC STRING WITH TOPOLOGICAL TERM

Modern Physics Letters A, 1991
It is shown that in D = 3 space-time dimensions there exist a topological term for the bosonic strings. The corresponding constraints satisfy the same Virasoro algebra as the ordinary bosonic strings. These results are generalized for an arbitrary dimensional space-time if we have SO (1, 2) ⊗ O (D − 3) or SO (3) ⊗ O (1, D − 4) symmetry instead of SO ...
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