Geons| Geons |
In General > s.a. 3D manifolds [prime
factors]; general
relativity solutions; Mapping
Class.
* History: A precursor
was given by the concept of gravitational
bag; The original meaning of the term, as used by Wheeler, referred to
the non-topological
one.
Non-Topological > s.a. Boson
Stars; solitons.
* Idea: An object with
particle-like properties made out of the spacetime metric, and possibly other
fields.
@ General references: Wheeler PR(55);
Power & Wheeler RMP(57)
[thermal];
Brill & Hartle PR(64)
[gravitational waves].
@ Modified gravity: Vollick CQG(08)-a0807 [1+1
Jackiw-Teitelboim theory with higher-order corrections].
@ Gravity + scalar field: Barreto et al PRD(96)gq/05 [turning
point instability];
Sones gq/05 [+
electromagnetism].
@ Related topics: Cooperstock et al MPLA(95)
[non-existence], IJMPD(96)gq/95 [critical
analysis of Brill-Hartle geon]; Perry & Cooperstock
CQG(99)gq/98 [stability].
Topological (More recent meaning) > s.a. CPT;
Kink;
measurement in quantum theory; spin-statistics
theorem.
* Idea: An object with
particle-like properties made out of spatial geometry;
Part of the motivation is that one may be able to account for some non-gravitational
charges (e.g., electric charge) using topology.
* Remark: The concept is
similar to that of gravitational "kink", but the latter is
used to describe a topologically non-equivalent metric tensor fields defined
on a given fixed manifold.
* Types: Can be spinorial,
fermionic, possibly chiral; Some can switch between bosonic and fermionic behavior
after interactions.
* Question: Can they be preons?
* Example: Wheeler's "single
wormhole mouth" (not "quasi-localized").
@ General references: Finkelstein & Misner AP(59);
Finkelstein
JMP(66);
Cohen & Wald JMP(72);
Sorkin JPA(77);
Shastri et al IJTP(80);
Whiston JPA(81)
[classification, including fermionic]; Williams & Finkelstein IJTP(84);
Bais et al NPB(87);
Sorkin in(86), in(89); Bugajska IJTP(87);
Dunn et al JMP(91);
Williams & Zvengrowski JMP(92);
Dunn et al JMP(96)
[geodesic incompleteness];
Anderson & Brill
PRD(97)gq/96.
@ Phenomenology: Srivastava PRD(87).
@ Solutions: Harriott & Williams GRG(03)
[4D kink, rotating]; Louko et al CQG(05)gq/04 [with
spin and charge].
@ With cosmological constant: Dunn & Williams JMP(89),
et al JMP(94)
[locally de Sitter].
@ In 1+1 dimensions: Vasilic & Vukasinac
CQG(96);
Klösch & Strobl PRD(98)gq/97.
@ In 2+1 dimensions: Harriott & Williams NCB(05)
[kink number]; Stevens et al a0809 [no
asymptotically flat ones].
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dec 2008