Causally neutral quantum physics

Ding Jia

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Causally neutral quantum physics

Ding Jia

Quantum Physics · Submitted 15 Feb 2019

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

The authors' main claim Thanks to the absence of a definite spacetime causal structure, Lagrangian quantum field theories can be studied on a quantum superposition of spacetimes with a point identification structure.

how it is stated · asserted 0.83 read the record →

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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-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,510 input tokens.

What the abstract itself states, as probabilities: claims first 0.12 · states limitation 0.10 · human participants 0.02 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.02 · compares with prior results 0.78 · 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.

In fundamental theories that accounts for quantum gravitational effects, the spacetime causal structure is expected to be quantum uncertain. Previous studies of quantum causal structure focused on finite-dimensional systems. Here we present an algebraic framework that incorporates both finite- and infinite-dimensional systems including quantum fields. Thanks to the absence of a definite spacetime causal structure, Lagrangian quantum field theories can be studied on a quantum superposition of spacetimes with a point identification structure.

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	In fundamental theories that accounts for quantum gravitational effects, the spacetime causal structure is expected to be quantum uncertain.	background 1.00	0.05	0.07	hedged possibility 0.86
s1	Previous studies of quantum causal structure focused on finite-dimensional systems.	background 0.56	0.03	0.03	asserted 1.00
s2	Here we present an algebraic framework that incorporates both finite- and infinite-dimensional systems including quantum fields.	contribution 0.99	0.92	0.22	asserted 1.00
s3	Thanks to the absence of a definite spacetime causal structure, Lagrangian quantum field theories can be studied on a quantum superposition of spacetimes with a point identification structure.	contribution 0.35	0.51	0.34	asserted 0.83

What kind of paper the classifier reports this is: method or tool 0.85 · evidence from proof or derivation 0.87.

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arXiv listing abstract v1

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full text
figures and tables
references and citing sentences
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P abstract

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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

In fundamental theories that accounts for quantum gravitational effects, the spacetime causal structure is expected to be quantum uncertain. Previous studies of quantum causal structure focused on finite-dimensional systems. Here we present an algebraic framework that incorporates both finite- and infinite-dimensional systems including quantum fields. Thanks to the absence of a definite spacetime causal structure, Lagrangian quantum field theories can be studied on a quantum superposition of spacetimes with a point identification structure.

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How the literature uses it

2 arXiv papers cite this in 3 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 background 1 paper

There have been some attempts in the literature at constructing such a threading of points between the different manifolds, on the classical [ref] and the quantum level [ref] .

Identification is Pointless: Quantum Coordinates, Localisation of Events, and the Quantum Hole Argument · Introduction · 0.81

What it cites · 4 sentences without a confident label

Compares with 1 paper

[ref] While the cited works share the individual features, to our knowledge the present framework is unique is possessing all the features.

Spacetime Quantum Mechanics and the Quantum Mechanics of Spacetime · Introduction · 0.89

Cites as background 2 papers

More recently, several frameworks accommodating indefinite causal structure for quantum theory were proposed using tools from quantum information theory, e.g., [ref] .

Theoretical framework for Higher-Order Quantum Theory · Introduction · 0.81
A version of the quantum switch had also been conceived in connection with gravitational time dilation [ref] .

Bell's Theorem for Temporal Order · The quantum switch · 0.85

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