Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

37.8K
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
37.8K
Problem-Solving: Tuning of a Guitar String01:04

Problem-Solving: Tuning of a Guitar String

1.1K
In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length.
The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...
1.1K
Types of RNA01:23

Types of RNA

73.0K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
73.0K
Types of Hormones02:13

Types of Hormones

83.8K
Hormones can be classified into three main types based on their chemical structures: steroids, peptides, and amines. Their actions are mediated by the specific receptors they bind to on target cells.
83.8K
Types of Selection01:46

Types of Selection

45.2K
Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
45.2K
Types of Skewness01:09

Types of Skewness

18.5K
If the frequency distribution of a data set is more inclined towards smaller or larger values, the distribution is said to be skewed. If data values are skewed to the right, then the distribution is called positively skewed. Conversely, if the plot is skewed to the left, the distribution is called negatively skewed.
For instance, in the middle of a pandemic, the geographical distribution of vaccine coverage may be positively skewed towards populations in the global north countries. However,...
18.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Unification of Decoupling Limits in String and M Theory.

Physical review letters·2024
Same author

Anti-de Sitter Particles and Manifest (Super)Isometries.

Physical review letters·2017
Same author

Yang-Mills as massive Chern-Simons theory: a third way to three-dimensional gauge theories.

Physical review letters·2015
See all related articles

Related Experiment Video

Updated: Feb 9, 2026

A Customizable Protocol for String Assembly gRNA Cloning STAgR
10:00

A Customizable Protocol for String Assembly gRNA Cloning STAgR

Published on: December 26, 2018

10.2K

Unifying Type-II Strings by Exceptional Groups.

Alex S Arvanitakis1, Chris D A Blair2

  • 1The Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, United Kingdom.

Physical Review Letters
|June 9, 2018
PubMed
Summary

We developed an exceptional sigma model using exceptional field theory (EFT) to describe supergravity backgrounds. This model uniquely determines couplings to gauge fields without supersymmetry, linking to string theory actions.

More Related Videos

A Unified Methodological Framework for Vestibular Schwannoma Research
08:43

A Unified Methodological Framework for Vestibular Schwannoma Research

Published on: June 20, 2017

7.8K
Dendrochronological Dating and Provenancing of String Instruments
10:26

Dendrochronological Dating and Provenancing of String Instruments

Published on: October 6, 2022

3.2K

Related Experiment Videos

Last Updated: Feb 9, 2026

A Customizable Protocol for String Assembly gRNA Cloning STAgR
10:00

A Customizable Protocol for String Assembly gRNA Cloning STAgR

Published on: December 26, 2018

10.2K
A Unified Methodological Framework for Vestibular Schwannoma Research
08:43

A Unified Methodological Framework for Vestibular Schwannoma Research

Published on: June 20, 2017

7.8K
Dendrochronological Dating and Provenancing of String Instruments
10:26

Dendrochronological Dating and Provenancing of String Instruments

Published on: October 6, 2022

3.2K

Area of Science:

  • Theoretical Physics
  • High Energy Physics
  • String Theory

Background:

  • Exceptional field theory (EFT) unifies metric and form fields in supergravity.
  • EFT provides a manifestly covariant framework for supergravity backgrounds before compactification.

Purpose of the Study:

  • To construct a two-dimensional sigma model coupled to supergravity backgrounds using EFT.
  • To uniquely determine the Weyl-invariant Lagrangian and its couplings to gauge fields.

Main Methods:

  • Formulation of a sigma model within the exceptional field theory framework.
  • Analysis of world sheet symmetries to fix the Lagrangian.
  • Relating the constructed action to known type-IIA and type-IIB string theory actions.

Main Results:

  • A unique, Weyl-invariant Lagrangian for the exceptional sigma model was derived.
  • The model successfully relates to type-IIA fundamental string and type-IIB (m, n) actions.
  • The construction correctly predicts couplings to gauge fields in Neveu-Schwarz and Ramond sectors.

Conclusions:

  • The exceptional sigma model provides a unified description of supergravity backgrounds.
  • The EFT framework naturally incorporates string theory actions and gauge field couplings.
  • Supersymmetry is not required to determine these fundamental couplings.