Abstract
Let φ be a growth function, and let A:= −(∇−ia)·(∇−ia)+V be a magnetic Schrödinger operator on L 2(ℝn), n ⩾ 2, where a:= (a 1, a 2, …, a n ) ∈ L 2loc (ℝn,ℝn) and 0 ⩽ V ∈ L 1loc (ℝn). We establish the equivalent characterizations of the Musielak-Orlicz-Hardy space H A, φ (ℝn), defined by the Lusin area function associated with \(\{ e^{ - t^2 A} \} _{t > 0} \), in terms of the Lusin area function associated with \(\{ e^{ - t\sqrt A } \} _{t > 0} \), the radial maximal functions and the non-tangential maximal functions associated with \(\{ e^{ - t^2 A} \} _{t > 0} \) and \(\{ e^{ - t\sqrt A } \} _{t > 0} \), respectively. The boundedness of the Riesz transforms L k A −1/2, k ∈ {1, 2, …, n}, from H A, φ (ℝn) to H φ(ℝn) is also presented, where L k is the closure of \(\frac{\partial } {{\partial x_k }} \) - ia k in L 2(ℝn). These results are new even when φ(x, t):= ω(x)t p for all x ∈ ℝn and t ∈ (0,+∞) with p ∈ (0, 1] and ω ∈ A ∞(ℝn) (the class of Muckenhoupt weights on ℝn).
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Yang, D., Yang, D. Maximal function characterizations of Musielak-Orlicz-Hardy spaces associated with magnetic Schrödinger operators. Front. Math. China 10, 1203–1232 (2015). https://doi.org/10.1007/s11464-015-0432-8
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DOI: https://doi.org/10.1007/s11464-015-0432-8
Keywords
- Magnetic Schrödinger operator
- Musielak-Orlicz-Hardy space
- Lusin area function
- growth function
- maximal function
- Riesz transform