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arXiv 2301.09348quant-phhep-latmath-phmath.MP
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量子力学中连续可观测量的数字表示

Digital representation of continuous observables in Quantum Mechanics

M. G. Ivanov, A. Yu. Polushkin

AI总结:

本文提出将连续可观测量按进位制数字展开为具有离散谱的厄米算符,并分析数字算符的对易关系、数制对晶格表示的影响及自然出现的重整化问题。

摘要:

为了在经典或量子计算机上模拟量子系统,必须将连续可观测量(例如坐标与动量,或能量与时间)约化为离散可观测量。在本工作中,我们将连续可观测量在进位制系统中表示为一系列基数的幂乘以各求和项(“数字”),这些数字最终成为具有离散谱的厄米算符。我们研究由此得到的数字的量子力学算符、它们之间的对易关系,以及数制选择对晶格和表示的影响。此外,在构建数字表示的过程中,发散求和的重整化会自然出现。

英文摘要:

To simulate the quantum systems at classical or quantum computers, it is necessary to reduce continuous observables (e.g. coordinate and momentum or energy and time) to discrete ones. In this work we consider the continuous observables represented in the positional systems as a series of powers of the radix mulitplied over the summands (``digits``), which turn out to be Hermitean operators with discrete spectrum. We investigate the obtained quantum mechanical operators of digits, the commutation relations between them and the effects of choice of numeral system on the lattices and representations. Furthermore, during the construction of the digital representation renormalizations of diverging sums naturally occur.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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