Results 31 to 40 of about 490,296 (313)

The Study of the Theoretical Size and Node Probability of the Loop Cutset in Bayesian Networks

open access: yesMathematics, 2020
Pearl’s conditioning method is one of the basic algorithms of Bayesian inference, and the loop cutset is crucial for the implementation of conditioning.
Jie Wei, Yufeng Nie, Wenxian Xie
doaj   +1 more source

An SIE Formulation With Triangular Discretization and Loop Analysis for Parameter Extraction of Arbitrarily Shaped Interconnects [PDF]

open access: yesIEEE transactions on microwave theory and techniques, 2022
A surface integral equation (SIE) formulation under the magneto-quasi-static assumption is proposed to efficiently and accurately model arbitrarily shaped interconnects in packages.
Zekun Zhu, Z. Chen, Shunchuan Yang
semanticscholar   +1 more source

Hybrid Robust Model Predictive Based Controller for a Class of Multi-Agent Aerial dynamic Systems [PDF]

open access: yesAUT Journal of Electrical Engineering, 2022
The decentralized control of a multi-agent system with leader-follower consensus is investigated. The system is formulated in graph theory, and a general configuration for L-F formation is proposed.
Erfan Nejabat, Amirhosein Nikoofard
doaj   +1 more source

Fermions in loop quantum gravity and resolution of doubling problem [PDF]

open access: yesClassical and quantum gravity, 2022
The fermion propagator is derived in detail from the model of fermion coupled to loop quantum gravity (LQG). As an ingredient of the propagator, the vacuum state is defined as the ground state of some effective fermion Hamiltonian under the background ...
Cong Zhang, Hongguang Liu, Muxin Han
semanticscholar   +1 more source

Design of Strict Control-Lyapunov Functions for Quantum Systems with QND Measurements [PDF]

open access: yes, 2011
We consider discrete-time quantum systems subject to Quantum Non-Demolition (QND) measurements and controlled by an adjustable unitary evolution between two successive QND measures.
Amini, Hadis   +2 more
core   +3 more sources

A New Method for Type Synthesis of 2R1T and 2T1R 3-DOF Redundant Actuated Parallel Mechanisms with Closed Loop Units

open access: yesChinese Journal of Mechanical Engineering, 2020
The current type synthesis of the redundant actuated parallel mechanisms is adding active-actuated kinematic branches on the basis of the traditional parallel mechanisms, or using screw theory to perform multiple getting intersection and union to ...
Yongquan Li, Yang Zhang, Lijie Zhang
doaj   +1 more source

Quantum algorithm for Feynman loop integrals [PDF]

open access: yesJournal of High Energy Physics, 2021
We present a novel benchmark application of a quantum algorithm to Feynman loop integrals. The two on-shell states of a Feynman propagator are identified with the two states of a qubit and a quantum algorithm is used to unfold the causal singular ...
S. Ramírez-Uribe   +4 more
semanticscholar   +1 more source

Scalar Matter Coupled to Quantum Gravity in the Causal Approach: Finite One-Loop Calculations and Perturbative Gauge Invariance [PDF]

open access: yes, 1999
Quantum gravity coupled to scalar massive matter fields is investigated within the framework of causal perturbation theory. One-loop calculations include matter loop graviton self-energy and matter self-energy and yield ultraviolet finite and cutoff-free
't Hooft   +20 more
core   +2 more sources

Modular graph functions and odd cuspidal functions. Fourier and Poincaré series

open access: yesJournal of High Energy Physics, 2019
Modular graph functions are SL(2, ℤ)-invariant functions associated with Feynman graphs of a two-dimensional conformal field theory on a torus of modulus τ. For one-loop graphs they reduce to real analytic Eisenstein series. We obtain the Fourier series,
Eric D’Hoker, Justin Kaidi
doaj   +1 more source

Ladder and zig-zag Feynman diagrams, operator formalism and conformal triangles

open access: yesJournal of High Energy Physics, 2023
We develop an operator approach to the evaluation of multiple integrals for multiloop Feynman massless diagrams. A commutative family of graph building operators H α for ladder diagrams is constructed and investigated.
S. E. Derkachov   +2 more
doaj   +1 more source

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