Information om | Engelska ordet COMPACTIFICATIONS

Exempel på hur man kan använda COMPACTIFICATIONS i en mening

• The advantages of the Alexandroff compactification lie in its simple, often geometrically meaningful structure and the fact that it is in a precise sense minimal among all compactifications; the disadvantage lies in the fact that it only gives a Hausdorff compactification on the class of locally compact, noncompact Hausdorff spaces, unlike the Stone–Čech compactification which exists for any topological space (but provides an embedding exactly for Tychonoff spaces).
• The crucial contribution by Lafforgue to solve this question is the construction of compactifications of certain moduli stacks of shtukas.
• These relate various conformal field theories to compactifications of string theory and M-theory in various numbers of dimensions.
• In collaboration with Renata Kallosh, Andrei Linde, and Sandip Trivedi, he found the first models of accelerated expansion of the universe in low energy supersymmetric string compactifications (see KKLT mechanism).
• The term modular curve can also be used to refer to the compactified modular curves X(Γ) which are compactifications obtained by adding finitely many points (called the cusps of Γ) to this quotient (via an action on the extended complex upper-half plane).
• Stueckelberg type couplings arise quite naturally in theories involving compactifications of higher-dimensional string theory, in particular, these couplings appear in the dimensional reduction of the ten-dimensional N = 1 supergravity coupled to supersymmetric Yang–Mills gauge fields in the presence of internal gauge fluxes.
• The flux compactifications can be described as F-theory vacua or type IIB string theory vacua with or without D-branes.
• Recently K-theory has been conjectured to classify the spinors in compactifications on generalized complex manifolds.
• This is because a quadratic term is present in the low energy effective action of heterotic string theory, and it also appears in six-dimensional Calabi–Yau compactifications of M-theory.
• combinatorially defined polyhedral and cell complexes; combinatorial structures in geometry and topology, such as stratifications and compactifications of spaces; combinatorial aspects of chain complexes, such as coboundary expansion.
• Between 2007 and 2014, Lechtenfeld investigated heterotic string compactifications with fluxes and fermionic condensates on nearly Kähler, G2 and Sasakian manifolds, to order α’, finding families of non-supersymmetric string vacua.

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