Scaled Affine Quantization of Ultralocal $\varphi^4_2$ a comparative
Path Integral Monte Carlo study with Canonical Quantization
- URL: http://arxiv.org/abs/2109.13447v4
- Date: Mon, 5 Dec 2022 18:17:55 GMT
- Title: Scaled Affine Quantization of Ultralocal $\varphi^4_2$ a comparative
Path Integral Monte Carlo study with Canonical Quantization
- Authors: Riccardo Fantoni and John R. Klauder
- Abstract summary: We show that $r geq 2n/(n-2) can be acceptably quantized and the resulting theory is nontrivial, unlike what happens using canonical quantization.
In particular we consider the ultralocal $varphi4$ model and its renormalized properties for both the scaled canonical quantization and the scaled affine quantization version.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: After the success of affine quantization in proving through Monte Carlo
analysis that the covariant euclidean scalar field theory, $\varphi^r_n$, where
$r$ denotes the power of the interaction term and $n = s + 1$ with $s$ the
spatial dimension and $1$ adds imaginary time, such that $r \geq 2n/(n-2)$ can
be acceptably quantized and the resulting theory is nontrivial, unlike what
happens using canonical quantization, we show here that the same has to be
expected for $r>2$ and any $n$ even for the ultralocal field theory. In
particular we consider the ultralocal $\varphi^4_2$ model and study its
renormalized properties for both the scaled canonical quantization version and
the scaled affine quantization version through path integral Monte Carlo.
Related papers
- Rescaling transformations and the Grothendieck bound formalism in a single quantum system [0.0]
The Grothendieck bound formalism is studied using rescaling transformations'
The Grothendieck formalism considers a classical' quadratic form $cal C(theta)$ which takes values less than $1$, and the corresponding quantum' quadratic form $cal Q(theta)$ which takes values greater than $1$.
arXiv Detail & Related papers (2024-09-11T13:45:36Z) - Measuring quantum relative entropy with finite-size effect [53.64687146666141]
We study the estimation of relative entropy $D(rho|sigma)$ when $sigma$ is known.
Our estimator attains the Cram'er-Rao type bound when the dimension $d$ is fixed.
arXiv Detail & Related papers (2024-06-25T06:07:20Z) - Algebraic Aspects of Boundaries in the Kitaev Quantum Double Model [77.34726150561087]
We provide a systematic treatment of boundaries based on subgroups $Ksubseteq G$ with the Kitaev quantum double $D(G)$ model in the bulk.
The boundary sites are representations of a $*$-subalgebra $Xisubseteq D(G)$ and we explicate its structure as a strong $*$-quasi-Hopf algebra.
As an application of our treatment, we study patches with boundaries based on $K=G$ horizontally and $K=e$ vertically and show how these could be used in a quantum computer
arXiv Detail & Related papers (2022-08-12T15:05:07Z) - Scaled Affine Quantization of $\varphi^4_4$ in the Low Temperature Limit [0.0]
We prove through Monte Carlo analysis that the covariant euclidean scalar field theory, $varphir_n$, is nontrivial and renormalizable even at low temperatures in the highly quantum regime.
arXiv Detail & Related papers (2022-01-28T02:24:02Z) - Lessons from $O(N)$ models in one dimension [0.0]
Various topics related to the $O(N)$ model in one spacetime dimension (i.e. ordinary quantum mechanics) are considered.
The focus is on a pedagogical presentation of quantum field theory methods in a simpler context.
arXiv Detail & Related papers (2021-09-14T11:36:30Z) - Quantum double aspects of surface code models [77.34726150561087]
We revisit the Kitaev model for fault tolerant quantum computing on a square lattice with underlying quantum double $D(G)$ symmetry.
We show how our constructions generalise to $D(H)$ models based on a finite-dimensional Hopf algebra $H$.
arXiv Detail & Related papers (2021-06-25T17:03:38Z) - Convergence of Sparse Variational Inference in Gaussian Processes
Regression [29.636483122130027]
We show that a method with an overall computational cost of $mathcalO(log N)2D(loglog N)2)$ can be used to perform inference.
arXiv Detail & Related papers (2020-08-01T19:23:34Z) - Linear Time Sinkhorn Divergences using Positive Features [51.50788603386766]
Solving optimal transport with an entropic regularization requires computing a $ntimes n$ kernel matrix that is repeatedly applied to a vector.
We propose to use instead ground costs of the form $c(x,y)=-logdotpvarphi(x)varphi(y)$ where $varphi$ is a map from the ground space onto the positive orthant $RRr_+$, with $rll n$.
arXiv Detail & Related papers (2020-06-12T10:21:40Z) - Sample Efficient Reinforcement Learning via Low-Rank Matrix Estimation [30.137884459159107]
We consider the question of learning $Q$-function in a sample efficient manner for reinforcement learning with continuous state and action spaces.
We develop a simple, iterative learning algorithm that finds $epsilon$-Schmidt $Q$-function with sample complexity of $widetildeO(frac1epsilonmax(d1), d_2)+2)$ when the optimal $Q$-function has low rank $r$ and the factor $$ is below a certain threshold.
arXiv Detail & Related papers (2020-06-11T00:55:35Z) - Quantization of the 1-D forced harmonic oscillator in the space ($x, v$) [0.0]
For the resonant case, both forms of quantization are different.
The average energy of the system is higher in ($x,hat p$) quantization than on the $(x,hat v$) quantization.
The Boltzmann-Shannon entropy on the ($x,hat p$) quantization is higher than on the ($x,hat v$) quantization.
arXiv Detail & Related papers (2020-04-29T21:29:20Z) - Quantum computation and measurements from an exotic space-time R4 [0.0]
A valid subgroup $H$ of index $d$ in $G$ leads to a'magic' state $left|psirightrangle$ in $d$-dimensional Hilbert space.
A new picture relating a topological quantum computing and exotic space-time is also intended to become an approach of 'quantum gravity'
arXiv Detail & Related papers (2020-01-22T15:16:03Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.