TY - RPRT TI - What do physics-informed DeepONets learn? Understanding and improving training for scientific computing applications AU - Williams, Emily J. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)] (ORCID:0000000283792570) AU - Howard, Amanda A. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000264116198) AU - Qadeer, Saad [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000208293907) AU - Meuris, Brek [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)] (ORCID:0000000346836578) AU - Stinis, Panos [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)] (ORCID:0000000299285637) PY - 2026 DO - 10.1016/j.jcp.2026.114851 UR - https://www.osti.gov/biblio/3025290 ID - 3025290 ER -