Results 71 to 80 of about 970,098 (286)
Advanced Engineering Materials, EarlyView.New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
wiley +1 more source
On tensionless string field theory in AdS3
Journal of High Energy Physics, 2019 We report on progress in formulating a field theory of tensionless strings in AdS3, starting from the dual large-N symmetric orbifold CFT. We propose a set of field equations which are gauge invariant under the higher spin algebra of the theory, the ...
Joris Raeymaekers
doaj +1 more source
Duality in Quantum Field Theory (and String Theory) [PDF]
AIP Conference Proceedings, 1998 38 pages, 7 figures, LaTeX, revtex, two references added. Based on a lectures delivered by L. A.-G. at `The Workshop on Fundamental Particles and Interactions', held in Vanderbilt University, and CERN-La Plata-Santiago de Compostela School of Physics, both in May ...
Alvarez-Gaume, Luis, Zamora, Frederic
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch +3 more
wiley +1 more source
Light strings and strong coupling in F-theory
Journal of High Energy Physics, 2023 We consider 4d N $$ \mathcal{N} $$ = 1 theories arising from F-theory compactifications on elliptically-fibered Calabi-Yau four-folds and investigate the non-perturbative structure of their scalar field space beyond the large volume/large complex ...
Max Wiesner
doaj +1 more source
Continuous half-string representation of string field theory [PDF]
Journal of High Energy Physics, 2003 We give the explicit form of the half-string representation in the continuous kappa basis. We show the comma structure of the three-vertex, when expanded around an arbitrary projector, and that the zero-mode must be replaced by the mid-point degree of freedom in the half-string representation.
Fuchs, Ehud +2 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.We develop a data‐driven method to derive the mathematical expressions of the Flory–Huggins interaction parameter χ for the swelling behavior of temperature–responsive hydrogels. Starting from initial assumptions of χ, our workflow combines Bayesian optimization, Flory–Rehner theory, and symbolic regression to generate candidate χ expressions.
Yawen Wang +2 more
wiley +1 more source
KLT factorization of nonrelativistic string amplitudes
Journal of High Energy Physics, 2022 We continue our study of the Kawai-Lewellen-Tye (KLT) factorization of winding string amplitudes in [1]. In a toroidal compactification, amplitudes for winding closed string states factorize into products of amplitudes for open strings ending on an array
Ziqi Yan, Matthew Yu
doaj +1 more source
On democratic string field theories
Journal of High Energy PhysicsAbstract We reexamine democratic open string field theories, namely, theories in which string fields are not constrained to a single picture number and picture changing is obtained as a gauge transformation. We describe several possibilities for regular free theories and attempt to construct the lowest order interaction term and ...
Stefano Giaccari, Michael Kroyter
openaire +4 more sources
Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A
Advanced Engineering Materials, EarlyView.The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han +5 more
wiley +1 more source