Type IIA string theory
E752413
Type IIA string theory is a ten-dimensional supersymmetric string theory featuring non-chiral (left-right symmetric) fermions and D-branes, and is realized as a low-energy limit or compactification of M-theory.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Type IIA string theory canonical | 1 |
| Type IIB string theory | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8684838 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Type IIA string theory Context triple: [M-theory, generalizes, Type IIA string theory]
-
A.
Type I string theory
Type I string theory is a ten-dimensional supersymmetric string theory featuring both open and closed strings with SO(32) gauge symmetry and unoriented world-sheets.
-
B.
E8×E8 heterotic string theory
E8×E8 heterotic string theory is a ten-dimensional string theory whose gauge symmetry is based on the product of two exceptional Lie groups E8, making it a leading candidate for unifying gravity with the forces and particles of the Standard Model.
-
C.
Type I supergravity
Type I supergravity is a ten-dimensional supersymmetric gravitational theory that forms the low-energy effective description of Type I string theory and plays a key role in anomaly cancellation via the Green–Schwarz mechanism.
-
D.
Superstring Theory, Volume 1: Introduction
Superstring Theory, Volume 1: Introduction is a foundational graduate-level textbook that systematically presents the basic concepts, mathematical framework, and physical motivations of superstring theory.
-
E.
M-theory
M-theory is a proposed unifying framework in theoretical physics that generalizes string theories into an eleven-dimensional model aiming to reconcile quantum mechanics with gravity.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Type IIA string theory Target entity description: Type IIA string theory is a ten-dimensional supersymmetric string theory featuring non-chiral (left-right symmetric) fermions and D-branes, and is realized as a low-energy limit or compactification of M-theory.
-
A.
Type I string theory
Type I string theory is a ten-dimensional supersymmetric string theory featuring both open and closed strings with SO(32) gauge symmetry and unoriented world-sheets.
-
B.
E8×E8 heterotic string theory
E8×E8 heterotic string theory is a ten-dimensional string theory whose gauge symmetry is based on the product of two exceptional Lie groups E8, making it a leading candidate for unifying gravity with the forces and particles of the Standard Model.
-
C.
Type I supergravity
Type I supergravity is a ten-dimensional supersymmetric gravitational theory that forms the low-energy effective description of Type I string theory and plays a key role in anomaly cancellation via the Green–Schwarz mechanism.
-
D.
Superstring Theory, Volume 1: Introduction
Superstring Theory, Volume 1: Introduction is a foundational graduate-level textbook that systematically presents the basic concepts, mathematical framework, and physical motivations of superstring theory.
-
E.
M-theory
M-theory is a proposed unifying framework in theoretical physics that generalizes string theories into an eleven-dimensional model aiming to reconcile quantum mechanics with gravity.
- F. None of above. chosen
Statements (52)
| Predicate | Object |
|---|---|
| instanceOf |
non-chiral string theory
ⓘ
string theory ⓘ supersymmetric theory ⓘ ten-dimensional quantum field theory ⓘ |
| hasBraneChargeQuantization | yes ⓘ |
| hasClosedStrings | yes ⓘ |
| hasCompactificationManifolds | Calabi–Yau threefolds NERFINISHED ⓘ |
| hasD0Branes | yes ⓘ |
| hasD2Branes | yes ⓘ |
| hasD4Branes | yes ⓘ |
| hasD6Branes | yes ⓘ |
| hasD8Branes | yes ⓘ |
| hasDbranes | yes ⓘ |
| hasDpBranesFor | even p ⓘ |
| hasFermionChirality | non-chiral ⓘ |
| hasFundamentalLengthScale | string length l_s ⓘ |
| hasFundamentalStrings | yes ⓘ |
| hasGaugeSymmetry |
diffeomorphism invariance
ⓘ
p-form gauge symmetries ⓘ |
| hasLeftRightSymmetry | yes ⓘ |
| hasLowEnergyEffectiveTheory | Type IIA supergravity NERFINISHED ⓘ |
| hasNS5Branes | yes ⓘ |
| hasOpenStrings | yes ⓘ |
| hasRRFields | yes ⓘ |
| hasRRFormsOfDegree |
1
ⓘ
3 ⓘ 5 ⓘ 7 ⓘ 9 ⓘ |
| hasSpacetimeDimension | 10 ⓘ |
| hasSpacetimeFermions | Majorana spinors of opposite chirality ⓘ |
| hasStringCoupling | gs ⓘ |
| hasSupersymmetry | N=2 in ten dimensions ⓘ |
| hasTdualityPartner | Type IIB string theory ⓘ |
| hasWorldsheetSupersymmetry | N=(1,1) ⓘ |
| includesField |
NS-NS 2-form B-field
ⓘ
dilaton ⓘ metric tensor ⓘ |
| includesRRField |
1-form potential C1
ⓘ
3-form potential C3 ⓘ |
| isAnomalyFree | yes ⓘ |
| isConsistentWith | perturbative quantum gravity ⓘ |
| isLowEnergyLimitOf | M-theory compactified on a circle ⓘ |
| isObtainedFrom | M-theory on S^1 ⓘ |
| isRelatedByDualityTo | M-theory NERFINISHED ⓘ |
| isRelatedByTdualityTo | Type IIB string theory NERFINISHED ⓘ |
| isUsedIn |
AdS/CFT constructions
ⓘ
brane world scenarios ⓘ string compactifications to four dimensions ⓘ |
| relatesStringCouplingTo | radius of M-theory circle GENERATED ⓘ |
| requiresBackground | ten-dimensional Lorentzian spacetime ⓘ |
| wasDevelopedInContextOf | superstring revolution of the 1980s ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Type IIA string theory Description of subject: Type IIA string theory is a ten-dimensional supersymmetric string theory featuring non-chiral (left-right symmetric) fermions and D-branes, and is realized as a low-energy limit or compactification of M-theory.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Type IIB string theory