1ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain
2คณะฟิสิกส์ มหาวิทยาลัยวอร์ซอ ul. ปาสเตรา 5, PL-02-093 วอร์ซอ, โปแลนด์
3ภาควิชาฟิสิกส์ มหาวิทยาลัยเตหะราน ตู้ปณ. 14395-547 เตหะราน อิหร่าน
4โรงเรียนนาโนวิทยาศาสตร์ สถาบันวิจัยวิทยาศาสตร์พื้นฐาน (IPM) ตู้ปณ. 19395-5531 เตหะราน อิหร่าน
5ICREA - Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
6สถาบันฟิสิกส์ PAS, Aleja Lotnikow 32/46, 02-668 Warszawa, โปแลนด์
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นามธรรม
ในงานนี้ เราศึกษาการตรวจจับอุณหภูมิด้วยระบบที่มีความสัมพันธ์อย่างมากในขนาดจำกัดซึ่งแสดงการเปลี่ยนเฟสควอนตัม เราใช้แนวทางข้อมูลควอนตัมฟิชเชอร์ (QFI) เพื่อหาปริมาณความไวในการประมาณอุณหภูมิ และใช้กรอบงานการปรับขนาดที่มีขนาดจำกัดเพื่อเชื่อมโยงความไวนี้กับเลขชี้กำลังวิกฤตของระบบรอบจุดวิกฤต เราคำนวณ QFI เชิงตัวเลขรอบๆ จุดวิกฤตสำหรับระบบที่สามารถทดลองได้สองระบบ ได้แก่ คอนเดนเสทของสปิน-1 โบส-ไอน์สไตน์ และแบบจำลองสปินเชนไฮเซนเบิร์ก XX เมื่อมีสนามแม่เหล็กภายนอก ผลลัพธ์ของเรายืนยันคุณสมบัติการปรับขนาดที่มีขนาดจำกัดของ QFI นอกจากนี้เรายังหารือถึงสิ่งที่สังเกตได้ซึ่งสามารถเข้าถึงได้จากการทดลองซึ่ง (เกือบ) ทำให้ QFI อิ่มตัวที่จุดวิกฤติสำหรับทั้งสองระบบนี้
► ข้อมูล BibTeX
► ข้อมูลอ้างอิง
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