Macroscopic loops in the Bose gas, Spin O (N) and related models

A Quitmann, L Taggi - Communications in Mathematical Physics, 2023 - Springer
We consider a general system of interacting random loops which includes several models of
interest, such as the Spin O (N) model, random lattice permutations, a version of the …

Uniformly Positive Correlations in the Dimer Model and Macroscopic Interacting Self‐Avoiding Walk in ℤd, d ≥ 3

L Taggi - Communications on Pure and Applied Mathematics, 2022 - Wiley Online Library
Our first main result is that correlations between monomers in the dimer model in do not
decay to 0 when. This is the first rigorous result about correlations in the dimer model in …

Coexistence, enhancements and short loops in random walk loop soups

N Forien, M Quattropani, A Quitmann, L Taggi - … and Mathematical Physics, 2024 - msp.org
We consider a general random walk loop soup which includes, or is related to, several
models of interest, such as the spin O⁡(N) model, the double dimer model and the Bose …

Infinite cycles of interacting bosons

A Sütő - Physica Scripta, 2024 - iopscience.iop.org
In the first-quantized description of bosonic systems permutation cycles formed by the
particles play a fundamental role. In the ideal Bose gas Bose-Enstein condensation (BEC) is …

Gaussian random permutation and the boson point process

I Armendáriz, PA Ferrari, S Yuhjtman - Communications in Mathematical …, 2021 - Springer
We construct an infinite volume spatial random permutation (X, σ)(X, σ), where X ⊂ R^ d X⊂
R d is locally finite and σ: X → X σ: X→ X is a permutation, associated to the formal …

Loop correlations in random wire models

C Benassi, D Ueltschi - Communications in Mathematical Physics, 2020 - Springer
We introduce a family of loop soup models on the hypercubic lattice. The models involve
links on the edges, and random pairings of the link endpoints on the sites. We conjecture …

Scaling limit of ballistic self-avoiding walk interacting with spatial random permutations

V Betz, L Taggi - 2019 - projecteuclid.org
We consider nearest neighbour spatial random permutations on \mathbbZ^d. In this case,
the energy of the system is proportional to the sum of all cycle lengths, and the system can …

Infinite cycles in the interchange process in five dimensions

D Elboim, A Sly - arxiv preprint arxiv:2211.17023, 2022 - arxiv.org
In the interchange process on a graph $ G=(V, E) $, distinguished particles are placed on
the vertices of $ G $ with independent Poisson clocks on the edges. When the clock of an …

Macroscopic loops in the Bose gas, Spin O (N) and related models

A Quitmann, L Taggi - COMMUNICATIONS IN MATHEMATICAL …, 2023 - iris.uniroma1.it
We consider a general system of interacting random loops which includes several models of
interest, such as the Spin O (N) model, random lattice permutations, a version of the …

Large deviations analysis for random combinatorial partitions with counter terms

S Adams, M Dickson - Journal of Physics A: Mathematical and …, 2022 - iopscience.iop.org
In this paper, we study various models for random combinatorial partitions using large
deviation analysis for diverging scale of the reference process. The large deviation rate …