RT journal article T1 Sharp values for the constants in the polynomial Bohnenblust-Hille inequality A1 Jiménez-Rodríguez, P. A1 Muñoz-Fernández, G.A. A1 Murillo Arcila, Marina A1 Seoane-Sepúlveda, J.B. A2 Matemáticas K1 Bohnenblust–Hille constants K1 Absolutely summing operators K1 Quantum Information Theory AB In this paper we prove that the complex polynomial Bohnenblust-Hille constant for $2$-homogeneous polynomials in ${\mathbb C}^2$ is exactly $\sqrt[4]{\frac{3}{2}}$. We also give the exact value of the real polynomial Bohnenblust-Hille constant for $2$-homogeneous polynomials in ${\mathbb R}^2$. Finally, we provide lower estimates for the real polynomial Bohnenblust-Hille constant for polynomials in ${\mathbb R}^2$ of higher degrees. PB Taylor & Francis SN 1563-5139 YR 2016 FD 2016 LK http://hdl.handle.net/10498/35529 UL http://hdl.handle.net/10498/35529 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-may-2026