Branes and Black holes in Collision

Antonino Flachi; Takahiro Tanaka

RECORD

Branes and Black holes in Collision

Antonino Flachi, Takahiro Tanaka

High Energy Physics - Theory · Submitted 2 Mar 2007

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Therefore this mechanism is unlikely to be a solution to the cosmological domain wall problem, although it may cause some minor effects on the evolution of a domain wall network.

how it is stated · hedged possibility 0.64 read the record →

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The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 6,907 input tokens, $0.0003 reported.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.93 · human participants 0.01 · controlled comparison 0.06 · randomized assignment 0.01 · states quantitative result 0.11 · compares with prior results 0.10 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; show every role.

We study the collision of a brane with a black hole. Our aim is to explore the topology changing process of perforation of a brane. The brane is described as a field theoretical domain wall in the context of an axion-like model consisting of a complex scalar effective field theory with approximate U(1) symmetry. We simulate numerically the dynamics of the collision and illustrate the transition from the configuration without a hole to the pierced one with the aid of a phase diagram. The process of perforation is found to depend on the collisional velocity, and, contrary to our expectation, we observe that above a critical value of the velocity, the black hole has no chance to perforate the wall. That is: high energy collisions do not assist piercing. We also show that, only when the model parameters are fine-tuned so that the energy scale of the string is very close to that of the domain wall, the collision of the wall with the black hole has a possibility to provide a mechanism to erase domain walls, if the hole expands. However, in such cases, domain walls will form with many holes edged by a string and therefore disappear eventually. Therefore this mechanism is unlikely to be a solution to the cosmological domain wall problem, although it may cause some minor effects on the evolution of a domain wall network.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We study the collision of a brane with a black hole.	contribution 0.93	0.85	0.02	asserted 0.74
s1	Our aim is to explore the topology changing process of perforation of a brane.	contribution 0.84	0.37	0.03	asserted 0.57
s2	The brane is described as a field theoretical domain wall in the context of an axion-like model consisting of a complex scalar effective field theory with approximate U(1) symmetry.	method 0.95	0.26	0.02	asserted 1.00
s3	We simulate numerically the dynamics of the collision and illustrate the transition from the configuration without a hole to the pierced one with the aid of a phase diagram.	method 0.93	0.96	0.05	asserted 1.00
s4	The process of perforation is found to depend on the collisional velocity, and, contrary to our expectation, we observe that above a critical value of the velocity, the black hole has no chance to perforate the wall.	result 1.00	0.96	0.58	asserted 1.00
s5	That is: high energy collisions do not assist piercing.	interpretation 0.72	0.91	0.44	asserted 1.00
s6	We also show that, only when the model parameters are fine-tuned so that the energy scale of the string is very close to that of the domain wall, the collision of the wall with the black hole has a possibility to provide a mechanism to erase domain walls, if the hole expands.	result 0.97	0.89	0.10	hedged possibility 0.93
s7	However, in such cases, domain walls will form with many holes edged by a string and therefore disappear eventually.	result 0.59	0.79	0.10	asserted 0.97
s8	Therefore this mechanism is unlikely to be a solution to the cosmological domain wall problem, although it may cause some minor effects on the evolution of a domain wall network.	interpretation 0.97	0.77	0.58	hedged possibility 0.64

What kind of paper the classifier reports this is: simulation study 1.00 · evidence from simulation or computation 1.00.

What was examined, and what was not

sources read

arXiv listing abstract v1

not examined

full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

We study the collision of a brane with a black hole. Our aim is to explore the topology changing process of perforation of a brane. The brane is described as a field theoretical domain wall in the context of an axion-like model consisting of a complex scalar effective field theory with approximate U(1) symmetry. We simulate numerically the dynamics of the collision and illustrate the transition from the configuration without a hole to the pierced one with the aid of a phase diagram. The process of perforation is found to depend on the collisional velocity, and, contrary to our expectation, we observe that above a critical value of the velocity, the black hole has no chance to perforate the wall. That is: high energy collisions do not assist piercing. We also show that, only when the model parameters are fine-tuned so that the energy scale of the string is very close to that of the domain wall, the collision of the wall with the black hole has a possibility to provide a mechanism to erase domain walls, if the hole expands. However, in such cases, domain walls will form with many holes edged by a string and therefore disappear eventually. Therefore this mechanism is unlikely to be a solution to the cosmological domain wall problem, although it may cause some minor effects on the evolution of a domain wall network.

Human review

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How the literature uses it

5 arXiv papers cite this in 8 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 2 sentences without a confident label

Cites it as support 1 paper

Indeed, excitation of the brane oscillations in the black hole case is likely to have been observed in numerical experiments [ref] .

Nambu-Goldstone explosion under brane perforation · Conclusions · 0.99

Cites it as background 4 papers

The field-theoretical treatment of the collision of black holes with DWs was developed in [ref] .

Piercing of domain walls: new mechanism of gravitational radiation · Introduction · 0.82
Such a problem is of interest for applications in the standard [ref] and the Rundall-Sundrum-type [ref] cosmology, string theory [ref] , in studying brane -black hole composites [ref] , black hole escape from branes [ref] , and in other situations.

Energy-momentum balance in particle - domain wall perforating collision · Introduction · 0.98
Especially interesting is the process of perforation, which was suggested as a new mechanism of domain-wall destruction in the early Universe [ref] .

Branestrahlung: radiation in the particle-brane collision · Introduction · 0.92

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