Weak existence and uniqueness for McKean–Vlasov SDEs with common noise

WRP Hammersley, D Šiška, Ł Szpruch - 2021 - projecteuclid.org
This paper concerns the McKean–Vlasov stochastic differential equation (SDE) with
common noise. An appropriate definition of a weak solution to such an equation is …

Well-posedness and tamed schemes for McKean–Vlasov equations with common noise

C Kumar, Neelima, C Reisinger… - The Annals of Applied …, 2022 - projecteuclid.org
In this paper, we first establish well-posedness of McKean–Vlasov stochastic differential
equations (McKean–Vlasov SDEs) with common noise, possibly with coefficients of super …

Global solutions to the supercooled Stefan problem with blow-ups: regularity and uniqueness

F Delarue, S Nadtochiy, M Shkolnikov - Probability and Mathematical …, 2022 - msp.org
We consider the supercooled Stefan problem, which captures the freezing of a supercooled
liquid, in one space dimension. A probabilistic reformulation of the problem allows us to …

Rearranged stochastic heat equation: ergodicity and related gradient descent on the space of probability measures

F Delarue, WRP Hammersley - arXiv preprint arXiv:2403.16140, 2024 - arxiv.org
This article provides a case study for a recently introduced diffusion in the space of
probability measures over the reals, namely rearranged stochastic heat, which solves a …

Propagation of minimality in the supercooled Stefan problem

C Cuchiero, S Rigger… - The Annals of Applied …, 2023 - projecteuclid.org
Supercooled Stefan problems describe the evolution of the boundary between the solid and
liquid phases of a substance, where the liquid is assumed to be cooled below its freezing …

Dynamic default contagion in heterogeneous interbank systems

Z Feinstein, A Søjmark - SIAM Journal on Financial Mathematics, 2021 - SIAM
In this work we provide a simple setting that connects the structural modeling approach of
Gai--Kapadia interbank networks with the mean-field approach to default contagion. To …

Optimal bailout strategies resulting from the drift controlled supercooled Stefan problem

C Cuchiero, C Reisinger, S Rigger - Annals of Operations Research, 2024 - Springer
We consider the problem faced by a central bank which bails out distressed financial
institutions that pose systemic risk to the banking sector. In a structural default model with …

Contagious McKean--Vlasov problems with common noise: from smooth to singular feedback through hitting times

B Hambly, A Petronilia, C Reisinger, S Rigger… - arXiv preprint arXiv …, 2023 - arxiv.org
We consider a family of McKean-Vlasov equations arising as the large particle limit of a
system of interacting particles on the positive half-line with common noise and feedback …

McKean–Vlasov equations involving hitting times: Blow-ups and global solvability

E Bayraktar, G Guo, W Tang… - The Annals of Applied …, 2024 - projecteuclid.org
This paper is concerned with the analysis of blow-ups for two McKean–Vlasov equations
involving hitting times. Let (B (t); t≥ 0) be standard Brownian motion, and τ:= inf {t≥ 0: X (t)≤ …

Uniqueness for contagious McKean–Vlasov systems in the weak feedback regime

S Ledger, A Søjmark - Bulletin of the London Mathematical …, 2020 - Wiley Online Library
We present a simple uniqueness argument for a collection of McKean–Vlasov problems that
have seen recent interest. Our first result shows that, in the weak feedback regime, there is …