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Constrained symplectic quantization is a functional formulation of quantum field theory in which quantum fluctuations are sampled through a deterministic Hamiltonian flow in an auxiliary intrinsic time $\tau$. In this paper we extend the…

High Energy Physics - Theory · Physics 2026-05-27 Francesco Scardino , Martina Giachello , Giacomo Gradenigo

Symplectic quantization is a functional approach to quantum field theory that allows sampling of quantum fluctuations directly in Minkowski space time by means of a generalized Hamiltonian dynamics in an extra time variable $\tau$ which, at…

High Energy Physics - Lattice · Physics 2026-03-06 Martina Giachello , Francesco Scardino , Giacomo Gradenigo

Symplectic quantization is a functional approach to quantum field theory that allows sampling of quantum fluctuations directly in Minkowski space-time by means of a generalized microcanonical ensemble similar to the one of the standard…

High Energy Physics - Theory · Physics 2026-05-26 Martina Giachello , Francesco Scardino , Giacomo Gradenigo

We introduce symplectic quantization, a novel functional approach to quantum field theory which allows to sample quantum fields fluctuations directly in Minkowski space-time, at variance with the traditional importance sampling protocols,…

High Energy Physics - Lattice · Physics 2025-03-24 Martina Giachello , Giacomo Gradenigo , Francesco Scardino

We present here the first lattice simulation of symplectic quantization, a new functional approach to quantum field theory which allows to define an algorithm to numerically sample the quantum fluctuations of fields directly in Minkowski…

High Energy Physics - Lattice · Physics 2025-09-24 Martina Giachello , Francesco Scardino , Giacomo Gradenigo

We propose here a new symplectic quantization scheme, where quantum fluctuations of a scalar field theory stem from two main assumptions: relativistic invariance and equiprobability of the field configurations with identical value of the…

General Relativity and Quantum Cosmology · Physics 2021-06-03 Giacomo Gradenigo , Roberto Livi

The symplectic quantization scheme proposed for matter scalar fields in the companion paper "Symplectic quantization I" is generalized here to the case of space-time quantum fluctuations. Symplectic quantization considers an explicit…

General Relativity and Quantum Cosmology · Physics 2021-05-31 Giacomo Gradenigo

First of all we shortly illustrate how the symplectic quantization scheme [Gradenigo and Livi, 2021] can be applied to a relativistic field theory with self-interaction. Taking inspiration from the stochastic quantization method by Parisi…

Statistical Mechanics · Physics 2024-07-24 Giacomo Gradenigo , Roberto Livi , Luca Salasnich

We use the ideas of symplectic quantization for quantizing fields in finite volumes. We consider, as examples, the Klein-Gordon and electromagnetic fields in three dif- ferent boxes. As a second idea we consider the given boundary…

High Energy Physics - Theory · Physics 2013-11-05 S. Chenarani , A. Shirzad

We apply a new and mathematically rigorous method for the quantization of constrained systems to two-dimensional gauge theories. In this method, which quantizes Marsden-Weinstein symplectic reduction, the inner product on the physical state…

High Energy Physics - Theory · Physics 2009-10-30 N. P. Landsman , K. K. Wren

Using arbitrary symplectic structures and parametrization invariant actions, we develop a formalism, based on Dirac's quantization procedure, that allows us to consider theories with both space-space as well as space-time noncommutativity.…

High Energy Physics - Theory · Physics 2007-05-23 Marcos Rosenbaum , J. David Vergara , L. Román Juárez

Within the spirit of Dirac's canonical quantization, noncommutative spacetime field theories are introduced by making use of the reparametrization invariance of the action and of an arbitrary non-canonical symplectic structure. This…

High Energy Physics - Theory · Physics 2008-11-26 Marcos Rosenbaum , J. David Vergara , L. Roman Juarez

We present a novel framework for quantizing constrained quantum systems in which the processes of quantization and constraint enforcement are performed simultaneously. The approach is based on an extension of the stationary action…

Quantum Physics · Physics 2025-12-25 Jianhao M. Yang

We discuss a general prototypical constrained Hamiltonian system with a broad application in quantum field theory and similar contexts where dynamics is defined through a functional action obeying a stationarity principle. The prototypical…

High Energy Physics - Theory · Physics 2024-06-04 Ignacio S. Gomez , Vipul Kumar Pandey , Ronaldo Thibes

We develop a symplectic method of quantization of lightcone QCD. We find that boundary gauge fields are crucial for a consistent and complete quantization. By applying the symplectic Faddeev-Jackiw method, we very carefully remove…

High Energy Physics - Phenomenology · Physics 2010-04-14 Alexey V. Popov

In this paper, we investigate the quantum field theory in Klein space that has two time directions. To study the canonical quantization, we select the ``length of time" $q$ as the evolution direction of the system. In our novel…

High Energy Physics - Theory · Physics 2026-04-07 Bin Chen , Zezhou Hu , Xin-Cheng Mao

This work develops a symplectic framework for quantum computing to be applied to classical Hamiltonian systems, exploiting the intrinsic geometric compatibility between unitary quantum evolution and symplectic phase-space dynamics in a…

Strongly-coupled Quantum Field Theories (QFTs) are ubiquitous in high energy physics and many-body physics, yet our ability to do precise computations in such systems remains limited. Hamiltonian Truncation is a method for doing…

High Energy Physics - Theory · Physics 2022-01-28 A. Liam Fitzpatrick , Emanuel Katz

Interesting non-linear functions on the phase spaces of classical field theories can never be quantized immediately because the basic fields of the theory become operator valued distributions. Therefore, one is usually forced to find a…

High Energy Physics - Theory · Physics 2009-10-31 T. Thiemann

Covariant (polysymplectic) Hamiltonian field theory is formulated as a particular Lagrangian theory on a polysymplectic phase space that enables one to quantize it in the framework of familiar quantum field theory.

High Energy Physics - Theory · Physics 2007-05-23 G. Giachetta , L. Mangiarotti , G. Sardanashvily
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