Results 141 to 150 of about 283,223 (248)

Exploring the non-Markovian dynamics in depolarizing maps

Physical Review A
The non-Markovian depolarizing channel is explored from the perspective of understanding its non-Markovian behavior as well as the occurrence of singularities. The study brings together the various ways to identify and quantify non-Markovianity. This includes dynamical techniques such as quantum information backflow witness, Breuer-Laine-Piilo, Rivas ...
Ali Abu-Nada, Subhashish Banerjee, Vivek Balasaheb Sabale   +2 more
openaire   +2 more sources

Robust Mean–Variance Portfolio Optimization: Mean–Variance–Variance Criterion Versus Mean–Variance–Standard Deviation Criterion

Mathematical Finance, EarlyView.
ABSTRACT We study a dynamic portfolio optimization problem under the mean–variance–variance (M‐V‐V) criterion proposed by Maccheroni et al. It is an analogue of the Arrow–Pratt approximation to the well‐known smooth ambiguity model. Under the standard Black–Scholes framework, we derive fully explicit equilibrium investment strategies in which a DM's ...
David Landriault, Bin Li, Yuanyuan Zhang
wiley   +1 more source

Non-Markovian quantum exceptional points

Nature Communications
Exceptional points (EPs) are singularities in the spectra of non-Hermitian operators where eigenvalues and eigenvectors coalesce. Open quantum systems have recently been explored as EP testbeds due to their non-Hermitian nature.
Jhen-Dong Lin, Po-Chen Kuo, Neill Lambert, Adam Miranowicz, Franco Nori, Yueh-Nan Chen   +5 more
doaj   +1 more source

Exact decoherence dynamics of 1/f noise

New Journal of Physics, 2014
In this paper, we investigate the exact decoherence dynamics of a superconducting resonator coupled to an electromagnetic reservoir characterized by $1/f$ noise at finite temperature, where a full quantum description of the environment with $1/{{f}^{x}}$
Md Manirul Ali, Ping-Yuan Lo, Wei-Min Zhang   +2 more
doaj   +1 more source

Preference‐Based Representations for Collective Agency

Topics in Cognitive Science, EarlyView.
Abstract Computational accounts of learning and decision‐making in cognitive systems, and models thereof, such as reinforcement learning, typically assume that the behavior of individual agents is determined by an externally designated reward signal such that the agent's goal is the maximization of its expected accumulated reward under the state ...
Nadav Amir, Marieke van Vugt, Maia Fraser   +2 more
wiley   +1 more source

How AI‐Generated Feedback Hinders or Helps Learning: A Heterogeneous TNA Study of Learning Dynamics

Journal of Computer Assisted Learning, Volume 42, Issue 4, August 2026.
ABSTRACT Background Despite growing integration of generative AI in educational settings, little is known about whether and to what extent AI‐generated real‐time feedback can support first‐grade students in solving multimodal mathematical tasks. Objectives Our study aims to examine student–AI feedback dynamics from a process‐oriented perspective ...
Sonsoles López‐Pernas, Kamila Misiejuk, Mohammed Saqr   +2 more
wiley   +1 more source

Endogenous Distress Contagion in a Dynamic Interbank Model: How Possible Future Losses May Spell Doom Today

Mathematical Finance, Volume 36, Issue 3, Page 595-619, July 2026.
ABSTRACT We introduce a dynamic and stochastic interbank model with an endogenous notion of distress contagion, arising from rational worries about future defaults and ensuing losses. This entails a mark‐to‐market valuation adjustment for interbank claims, leading to a forward‐backward approach to the equilibrium dynamics whereby future default ...
Zachary Feinstein, Andreas Søjmark
wiley   +1 more source

State Variables and the Affine Nature of Markovian HJM Term Structure Models [PDF]

Finite dimensional Markovian HJM term structure models provide an ideal setting for the study of term structure dynamics and interest rate derivatives where the flexibility of the HJM framework and the tractability of Markovian models coexist ...
Oh-Kang Kwon, Carl Chiarella
core  

Open system dynamics with non-Markovian quantum jumps

, 2009
We discuss in detail how non-Markovian open system dynamics can be described in terms of quantum jumps [ J. Piilo et al. Phys. Rev. Lett. 100 180402 (2008)]. Our results demonstrate that it is possible to have a jump description contained in the physical
Piilo, Jyrki, Harkonen, Kari, Suominen, Kalle-Antti, Maniscalco, Sabrina   +3 more
core   +1 more source

Entanglement of A Qubit‐Qutrit System: Impact of Ohmic Noise

Advanced Physics Research, Volume 5, Issue 6, June 2026.
ABSTRACT This research examines the dynamics of quantum correlations in a hybrid qubit–qutrit system subjected to an Ohmic noisy environment. While entanglement degradation in homogeneous systems is well‐documented, the behavior of disparate‐dimensional interfaces remains a critical challenge for the interoperability of future quantum networks.
Polislin Fabrice Wonang, Wenceslas Cyprien Minsta Mi Edoux, Odette Melachio tiokang, Georges Collince Fouokeng, Alain B. Moubissi, Tchoffo Martin   +5 more
wiley   +1 more source