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3 questions with no upvoted or accepted answers
3 votes
0 answers
156 views

Is there a canonical Taylor expansion for operators in terms of $X$ and $P$?

Consider the algebra of operators acting on wavefunctions ($L^2(\mathbb{R})$) generated by $X$ and $P = -i\hbar (\partial/\partial x)$. For some operator $A$ in this algebra, or possibly in a ...
Jess Riedel's user avatar
  • 3,684
3 votes
0 answers
74 views

Are Wigner functions of any Unitary operator in $B(L^{2}(\mathbb{R}))$ in $L^{2}(\mathbb{R}^{2})$?

Are Wigner functions of any Unitary operator in $B(L^{2}(\mathbb{R}))$ in $L^{\infty}(\mathbb{R}^{2})$? i.e. Let $e^{iA} \in B(L^{2}(\mathbb{R}))$. Define the Wigner function (Wigner transform) as ...
Hldngpk's user avatar
  • 90
2 votes
0 answers
89 views

Fourier Transform of $s$-ordered Characteristic Function

In the book, "Quantum Continuous Variables (A Primer of Theoretical Methods)" by Alessio Serafini, on page 70, he defines an $s$-ordered characteristic function to be: $$ \chi_s(\alpha)=\...
Pratham Hullamballi's user avatar