TASEP fluctuations with soft-shock initial data

Quastel, Jeremy; Rahman, Mustazee

doi:10.5802/ahl.52

TASEP fluctuations with soft-shock initial data
[Fluctuations TASEP avec données initiales à choc modéré]

Quastel, Jeremy ¹ ; Rahman, Mustazee ^2,³

¹ Department of Mathematics, University of Toronto, Toronto, ON (Canada)
² Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA (USA)
³ Department of Mathematical Sciences, Durham University, Durham (UK)

Annales Henri Lebesgue, Tome 3 (2020), pp. 999-1021.

Résumé
Abstract

On considère le processus d’exclusion simple totalement asymétrique avec une densité initiale de particules à choc modéré, ayant la forme d’une fonction en escalier qui augmente dans la direction du flux et dont le saut est choisi suffisamment petit pour satisfaire l’échelle KPZ. On suppose que la configuration initiale est déterministe et que la dynamique crée un choc.

On montre que les fluctuations d’une particule située à l’endroit macroscopique du choc convergent vers le maximum de deux variables aléatoires indépendantes de type GOE Tracy–Widom. Ceci prouve une conjecture de Ferrari et Nejjar. On montre également que les fluctuations conjointes des particules près du choc sont décrites par le maximum de deux lignes définies en termes de ces deux variables aléatoires. La position microscopique du choc apparaît alors comme leur différence.

Nos preuves sont basées sur des formules déterminantes et une nouvelle factorisation des noyaux associés.

We consider the totally asymmetric simple exclusion process with soft-shock initial particle density, which is a step function increasing in the direction of flow and the step size chosen small to admit KPZ scaling. The initial configuration is deterministic and the dynamics create a shock.

We prove that the fluctuations of a particle at the macroscopic position of the shock converge to the maximum of two independent GOE Tracy–Widom random variables, which establishes a conjecture of Ferrari and Nejjar. Furthermore, we show the joint fluctuations of particles near the shock are determined by the maximum of two lines described in terms of these two random variables. The microscopic position of the shock is then seen to be their difference.

Our proofs rely on determinantal formulae and a novel factorization of the associated kernels.

Reçu le : 2018-08-09
Révisé le : 2019-02-27
Accepté le : 2019-10-14
Publié le : 2020-08-24

DOI : 10.5802/ahl.52

Classification : 60K35, 46N30, 82C22, 82C23
Mots clés : Burgers equation, exclusion process, KPZ universality, shock fluctuations, Tracy–Widom law

Affiliations des auteurs :

Quastel, Jeremy ¹ ; Rahman, Mustazee ^{2, 3}

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     title = {TASEP fluctuations with soft-shock initial data},
     journal = {Annales Henri Lebesgue},
     pages = {999--1021},
     publisher = {\'ENS Rennes},
     volume = {3},
     year = {2020},
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     language = {en},
     url = {http://www.numdam.org/articles/10.5802/ahl.52/}
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Quastel, Jeremy; Rahman, Mustazee. TASEP fluctuations with soft-shock initial data. Annales Henri Lebesgue, Tome 3 (2020), pp. 999-1021. doi : 10.5802/ahl.52. http://www.numdam.org/articles/10.5802/ahl.52/

Bibliographie
Cité par

[BB19] Borodin, Alexei; Bufetov, Alexey Color-position symmetry in interacting particle systems (2019) (https://arxiv.org/abs/1905.04692)

[BCR15] Borodin, Alexei; Corwin, Ivan; Remenik, Daniel Multiplicative functionals on ensembles of non-intersecting paths, Ann. Inst. Henri Poincaré, Probab. Stat., Volume 51 (2015) no. 1, pp. 28-58 | DOI | Numdam | MR | Zbl

[BFPS07] Borodin, Alexei; Ferrari, Patrick L.; Prahöfer, Michael; Sasamoto, Tomohiro Fluctuation properties of the TASEP with periodic initial configurations, J. Stat. Phys., Volume 129 (2007) no. 5-6, pp. 1055-1080 | DOI | MR | Zbl

[BFS09] Borodin, Alexei; Ferrari, Patrick L.; Sasamoto, Tomohiro Two speed TASEP, J. Stat. Phys., Volume 137 (2009) no. 5-6, pp. 936-977 | DOI | MR | Zbl

[BG16] Borodin, Alexei; Gorin, Vadim Lectures on integrable probability, Probability and Statistical Physics in St. Petersburg (Sidoravicious, V.; Smirnov, V., eds.) (Proceedings of Symposia in Pure Mathematics), Volume 91, American Mathematical Society, 2016, pp. 155-214 | MR | Zbl

[C11] Ben Arous, Gérard; Corwin, Ivan Current fluctuations for TASEP: A proof of the Prähofer–Spohn conjecture, Ann. Probab., Volume 29 (2011) no. 1, pp. 104-138 | DOI | Zbl

[CFP10] Corwin, Ivan; Ferrari, Patrick L.; Péché, Sandrine Limit processes for TASEP with shocks and rarefaction fans, J. Stat. Phys., Volume 140 (2010) no. 2, pp. 232-267 | DOI | MR | Zbl

[CQR13] Corwin, Ivan; Quastel, Jeremy; Remenik, Daniel Continuum statistics of the ${A i r y}_{2}$ process, Commun. Math. Phys., Volume 317 (2013) no. 2, pp. 347-362 | DOI | MR | Zbl

[CQR15] Corwin, Ivan; Quastel, Jeremy; Remenik, Daniel Renormalization fixed point of the KPZ universality class, J. Stat. Phys., Volume 160 (2015) no. 4, pp. 815-834 | DOI | MR | Zbl

[Fer94] Ferrari, Patrick A. Shocks in one-dimensional processes with drift, Probability and Phase Transition (Grimmett, Geoffrey, ed.) (NATO ASI Series. Series C. Mathematical and Physical Sciences), Volume 420, Kluwer Academic Publishers, 1994, pp. 35-48 | DOI | MR | Zbl

[FFV00] Ferrari, Patrick A.; Fontes, Luiz Renato G.; Vares, Maria Elalia The asymmetric simple exclusion process with multiple shocks, Ann. Inst. Henri Poincaré, Probab. Stat., Volume 36 (2000) no. 2, pp. 109-126 | DOI

[FGN19] Ferrari, Patrick L.; Ghosal, Pratik; Nejjar, Peter Limit law of a second class particle in TASEP with non-random initial condition, Ann. Inst. Henri Poincaré, Probab. Stat., Volume 55 (2019) no. 3, pp. 1203-1225 | DOI | MR | Zbl

[FN15a] Ferrari, Patrick L.; Nejjar, Peter Anomalous shock fluctuations in TASEP and last passage percolation models, Probab. Theory Relat. Fields, Volume 161 (2015) no. 1-2, pp. 61-109 | DOI | MR | Zbl

[FN15b] Ferrari, Patrick L.; Nejjar, Peter Shock fluctuations in flat TASEP under critical scaling, J. Stat. Phys., Volume 160 (2015) no. 4, pp. 985-1004 | DOI | MR | Zbl

[FN17] Ferrari, Patrick L.; Nejjar, Peter Fluctuations of the competition interface in presence of shocks, ALEA, Lat. Am. J. Probab. Math. Stat., Volume 14 (2017) no. 1, pp. 299-325 | DOI | MR | Zbl

[FS05] Ferrari, Patrick L.; Spohn, Herbert A determinantal formula for the GOE Tracy–Widom distribution, J. Phys. A, Math. Gen., Volume 38 (2005) no. 33, p. L557-L561 | DOI | MR

[Joh03] Johansson, Kurt Discrete polynuclear growth and determinantal processes, Commun. Math. Phys., Volume 242 (2003) no. 1-2, pp. 277-295 | DOI | MR | Zbl

[Lig99] Liggett, Thomas M. Stochastic interacting system: contact, voter and exclusion processes, Grundlehren der Mathematischen Wissenschaften, 324, Springer, 1999 | MR | Zbl

[MQR18] Matetski, Konstantin; Quastel, Jeremy; Remenik, Daniel The KPZ fixed point (2018) (https://arxiv.org/abs/1701.00018) | Zbl

[Nej18] Nejjar, Peter Transition to shocks in TASEP and decoupling of Last Passage Times, ALEA, Lat. Am. J. Probab. Math. Stat., Volume 15 (2018) no. 2, pp. 1311-1334 | DOI | MR | Zbl

[Nej19] Nejjar, Peter GUE $\times$ GUE limit law at hard shocks in ASEP (2019) (https://arxiv.org/abs/1906.07711)

[OODL + 17] Olver, Frank W. J.; Olde Daalhuis, Adri B.; Lozier, Daniel W.; Schneider, Barry I.; Boisvert, Ronald F.; Clark, Charles W.; Miller, Bruce R.; Saunders, Bonita V. NIST. Digital Library of Mathematical Functions, 2017 (http://dlmf.nist.gov/,Release 1.0.16)

[Pim17] Pimentel, Leandro P. R. Local behavior of Airy processes (2017) (https://arxiv.org/abs/1704.01903) | Zbl

[PS02] Prahöfer, Michael; Spohn, Herbert Scale invariance of the PNG droplet and the Airy process, J. Stat. Phys., Volume 108 (2002) no. 5-6, pp. 1071-1106 | DOI | MR | Zbl

[QR13] Quastel, Jeremy; Remenik, Daniel Local behavior and hitting probabilities of the ${Airy}_{1}$ process, Probab. Theory Relat. Fields, Volume 157 (2013) no. 3-4, pp. 605-634 | DOI | MR | Zbl

[QR19] Quastel, Jeremy; Remenik, Daniel How flat is flat in random interface growth?, Trans. Am. Math. Soc., Volume 371 (2019) no. 9, pp. 6047-6085 | DOI | MR | Zbl

[Qua13] Quastel, Jeremy Introduction to KPZ, Current Developments in Mathematics, Volume 2011, International Press, 2013, pp. 125-194 | Zbl

[Rez91] Rezakhanlou, Fraydoun Hydrodynamic limit for attractive particle systems on $Z^{d}$ , Commun. Math. Phys., Volume 140 (1991) no. 3, pp. 417-448 | MR | Zbl

[Sas05] Sasamoto, Tomohiro Spatial correlations of the 1D KPZ surface on a flat substrate, J. Phys. A, Math. Gen., Volume 38 (2005) no. 33, p. L.549-L.556 | DOI | MR

[Sep98] Seppäläinen, Timo Hydrodynamic scaling, convex duality and asymptotic shapes of growth models, Markov Process. Relat. Fields, Volume 4 (1998) no. 1, pp. 1-26 | MR | Zbl

[Sim05] Simon, Barry Trace ideals and their applications, Mathematical Surveys and Monographs, 120, American Mathematical Society, 2005 | MR | Zbl

[TW96] Tracy, Craig; Widom, Harold On orthogonal and symplectic matrix ensembles, Commun. Math. Phys., Volume 177 (1996) no. 3, pp. 727-754 | DOI | MR | Zbl

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