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The non-Hermitian models, which are symmetric under parity (P) and time-reversal (T) operators, are the cornerstone for the fabrication of new ultra-sensitive optoelectronic devices. However, providing the gain in such systems usually demands precise control of nonlinear processes, limiting their application. In this paper, to bypass this obstacle, we introduce a class of time-dependent non-Hermitian Hamiltonians (not necessarily Floquet) that can describe a two-level system with temporally modulated on-site potential and couplings. We show that implementing an appropriate non-Unitary gauge transformation converts the original system to an effective one with a balanced gain and loss. This will allow us to derive the evolution of states analytically. Our proposed class of Hamiltonians can be employed in different platforms such as electronic circuits, acoustics, and photonics to design structures with hiddenPT-symmetry potentially without imaginary onsite amplification and absorption mechanism to obtain an exceptional point.
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This content will become publicly available on January 14, 2026
A 3D bioprinted adhesive tissue engineering scaffold to repair ischemic heart injury
The design and fabrication of 3D printed ATESs within vivoadhesion and application potential, shape design capability, as well as accessible and convenient fabrication and application process.
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- Award ID(s):
- 2044657
- PAR ID:
- 10569782
- Publisher / Repository:
- Royal Society of Chemistry
- Date Published:
- Journal Name:
- Biomaterials Science
- Volume:
- 13
- Issue:
- 2
- ISSN:
- 2047-4830
- Page Range / eLocation ID:
- 506 to 522
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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