"Rheology" previously seen at Brooklyn’s Bushwick Starr in the spring of 2025 has reopened at Playwrights Horizons and proves to be a unique meta-theatrical experience with both performers, a real mother and son, theoretical physicists Bulbul Chakraborty and writer/director Shayok Misha Chowdhury (Pulitzer Prize finalist for "Public Obscenities"), appearing as themselves. Written and directed by Chowdhury in associ…