# Ab initio calculation of the Hoyle state.

@article{Epelbaum2011AbIC, title={Ab initio calculation of the Hoyle state.}, author={Evgeny Epelbaum and Hermann Krebs and Dean Lee and Ulf-G. Mei{\ss}ner}, journal={Physical review letters}, year={2011}, volume={106 19}, pages={ 192501 } }

The Hoyle state plays a crucial role in the helium burning of stars heavier than our Sun and in the production of carbon and other elements necessary for life. This excited state of the carbon-12 nucleus was postulated by Hoyle as a necessary ingredient for the fusion of three alpha particles to produce carbon at stellar temperatures. Although the Hoyle state was seen experimentally more than a half century ago nuclear theorists have not yet uncovered the nature of this state from first… Expand

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#### 234 Citations

Decay of Hoyle state

- Physics
- 2014

The prediction of Hoyle state was necessitated to explain the abundance of carbon, which is crucial for the existence of life on Earth and is the stepping stone for understanding the abundance of… Expand

The Hoyle state in 12 C

- Physics
- 2014

Abstract The 7.65 MeV, J π = 0 + , second excited state in 12 C is known as the Hoyle-state after Fred Hoyle. In the 1950s Hoyle proposed the existence of the state in order to account for the… Expand

Analogues of the exotic Hoyle state in the 12C nucleus

- Physics
- 2015

Experimental data on inelastic scattering of alpha particles by the 11B, 12C, and 13C nuclei are analyzed using the modified diffraction model and the radii of these nuclei in some “abnormal” excited… Expand

The Hoyle state in nuclear lattice effective field theory

- Physics
- 2014

We review the calculation of the Hoyle state of 12C in nuclear lattice effective field theory (NLEFT) and its anthropic implications in the nucleosynthesis of 12C and 16O in red giant stars. We also… Expand

Dependence of the triple-alpha process on the fundamental constants of nature

- Physics
- 2013

We present an ab initio calculation of the quark mass dependence of the ground state energies of 4He , 8Be and 12C , and of the energy of the Hoyle state in 12C . These investigations are performed… Expand

Investigation of exotic states of 13C at low energy

- Physics
- 2018

The differential cross-sections of the elastic and inelastic α +13C scattering have been measured at E(α) = 29MeV. The radii of the exited states: 3.09 (1/2+) and 8.86 (1/2−) MeV were determined… Expand

The Hoyle state and its relatives

- Physics
- 2014

The Hoyle state and other resonances in the continuum above the 3 α threshold in 12 C are studied in a microscopic cluster model. Whereas the Hoyle state is a very sharp resonance and can be treated… Expand

Decay modes of the Hoyle state in C12

- Physics
- 2018

Abstract Recent experimental results give an upper limit less than 0.043% (95% C.L.) to the direct decay of the Hoyle state into 3α respect to the sequential decay into Be 8 + α . We performed one… Expand

An improved upper limit on the direct 3α decay of the Hoyle state

- Physics
- 2018

The structure of the Hoyle state, a near-threshold 0+ state of extreme astrophysical significance in 12C has long been investigated. An experiment was performed to measure the branching ratio for the… Expand

Radius of 12C in the excited 22+ Hoyle state

- Physics
- 2013

The differential cross sections of the inelastic α + 12C scattering leading to the excitation of the short-lived 22+ (Ex = 9.84 or 9.6 MeV) state in 12C have been analysed within a modified… Expand

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